Which of these numbers is express properly in scientific notation?
A. 49.922 . 10^5
B. 499.22 . 10^4
C. 4.9922 . 10^6
Question 2
2.
Simplify the expression 1^3 + 4(3-2) - 6
Question 3
3.
A swimming pool contains 15,200 gallons of water. The pool is drained at a rate of 14 gallons per minute. Which expression represents the amount of water in the pool after x minutes.
A. 15,200x - 14
B. 15,200 + 14x
C. 15,200 - 14X
Question 4
4.
An online store sells wallets for $19.00 each. For each order, there is a one-time shipping and handling fee of $2.50. Which expression represents the cost of ordering x wallets?
A. (19.00 + 2.50)x
B. 10.00x + 2.50
C. x + 19.00 + 2.50
Question 5
5.
One leg of a right triangle is 24 units long. The hypotenuse of the triangle is 25 units long. What is the length of the other leg of the triangle.
Question 6
6.
A bag contains 25 balls, 6 of which are pink. Ross takes a ball from the bag at random. What is the probability that he will take out a pink ball? Express the answer as a percent.
Question 7
7.
Jessica goes to the post office every 3 days and Maria goes to the same post office every day. If they are together at the post office on Wednesday, what is the next day they will be together at the post office?