Unit 3A Study Guide - Alexandra Jones | Library

1

A skateboard that sells for $85 is on sale for 15% off.  A 7.5% sales tax is added after the discount.  What is the total cost of the skateboard?

The total cost of the skateboard is $ _______ .

1

Harvey and his two friends went to LongHorn Steakhouse for lunch.  They each had a steak and their bill totaled $70.47 (tax included).  They left their server a 15% tip.  What was the total cost of the lunch (including the tip)?

The total cost of the lunch was $_______ .

1

Old Navy is discounting its Halloween sweatshirts.  If the original price of a sweatshirt was    $44.95, and the sale price is $26.97, what percent discount is the customer receiving?

The customer is receiving a _______ % discount.

1

Max works for a magazine company. He makes an 18% commission on his total magazine sales.  If Max earned $21.60 in commissions, how much were his total sales?

Max had $_______ in total sales.

1

There were 134 people in attendance at the school football game last Friday. This week there were 246 people in attendance at the school football game.  What is the percent of change from last week to this week?   If necessary, round your answer to the nearest hundredth.

The percent of change from last week to this week was _______ %.

1

A salesperson starts working 40 hours per week at a job with two options for being paid. Option A is an hourly wage of $19. Option B is a commission rate of 8% on weekly sales. How much does the salesperson need to sell in a given week to earn the same amount of money?

1

Calculate the scale factor.

The scale factor is _______ .

1

The triangles are similar.  What is the perimeter of Triangle ABC?

The perimeter of Triangle ABC is _______ units.

AB does not correspond to DE.

1

Rectangles m and n are similar.  If Rectangle m has a length of 10 centimeters and a width of 9 centimeters, what is the length and width of rectangle n?

The length of rectangle n is _______ centimeters and the width is _______ centimeters.

1

Two trapezoids are similar. If the scale factor is 3/5 and the area of the scaled trapezoid is 81 square inches, what is the area of the original trapezoid?

The area of the original trapezoid is _______ square inches.

1

Thomas has a scale drawing for his club house. The measurements are 6 inches (length) by 12 inches (width). What will the actual club house measurements be if the scale factor is     
 ¾  in. = 2 feet?
The  length is _______ feet and the width is _______ feet .
If he wanted to cover the floor of the club house with carpet, how much carpeting will he need?  
Thomas would need_______ square feet of carpeting to cover the floor. 

1

Otto bought a 6 feet by 9 feet rectangular rug.  He would like to buy a similar rug with double the dimensions.  How many times larger than the original rug will the area of the new rug be?

The area of the new rug will be _______ times larger.

1

Annika’s older cousin borrowed $800 to repair her car.  She will pay off the loan after 2 years by paying back the principal plus 4.5% simple interest for each year. 

How much will she pay in interest?  $_______ 

How much will she pay back altogether? $_______ 

1

Calculate the scale factor.

The scale factor is _______ .

1

Which figures are scaled copies?

Not Scaled Copies
Scaled Copies

1

Is Figure B a scale copy of Figure A? Yes or No? Prove your response in the show your work box.

1

Mrs. Capps has plans for a rectangular garden that measures 8 ft. by 10 ft. Unfortunately, she does not have enough room in her backyard and needs to decrease the size of her garden. She only has room for a garden that has dimensions 0.75 times the size of the original dimensions. What is the area and perimeter of her new garden?

The perimeter is _______ feet and the area is _______ square feet.