October Spiral Review

y = 0.67x + 4

y = 1.5x - 4

y = -0.67 -4

y = 1.5x + 4

A, C, B, D

C, D, A, B

B, A, C, D

D, B, C, A

Betty and Wilma both sell cookies to earn money for a trip.  Betty charges $2 per cookie and Wilma charges $1.50 per cookie.  If Betty has $1.50 left from her allowance, how many cookies, x, must they each sell before they have the same amount of money?

  Jimmy and Jack stop at separate street vendors on their way to work one day.  The stand where Jimmy stops sells a refillable soda for $2 and pretzels for $2 each.  Jack stops at a vendor that sells pretzels for $1.50 each. Jimmy purchases the same number of pretzels as Jack and also spends the same amount of money.  Find x, the number of pretzels they each purchase.

Billy’s movie club charges a membership fee of $2 plus $1.50 per rental, while Suzie’s movie club has no membership fee but charges $2 per rental.  Billy and Suzie find that they rented the same number of movies last month and paid the same amount.  Find x, the number of movies each person rented.

y = -112x - 25

y = 112x - 25

y = -12x - 25

y = 12x - 25