1. Amanda uses the equation y = kx to determine how much money (y) she earns after working any number of hours (x). Amanda earned $350 after working 40 hours. What is the value of k in Amanda’s equation?

2. At the North Fair you earn 9 points for each bull's eye you hit, but you lose 7 points for each miss. After 25 tries, Linda has 33 points. How many hits did she have?

Question

1. Amanda uses the equation y = kx to determine how much money (y) she earns after working any number of hours (x). Amanda earned $350 after working 40 hours. What is the value of k in Amanda’s equation?

2. At the North Fair you earn 9 points for each bull's eye you hit, but you lose 7 points for each miss. After 25 tries, Linda has 33 points. How many hits did she have?

anonymous · Answer

1. y = kx 
x= 40, y = 350
so
350 = k*40    , k =  35/4
= 8.75

anonymous · Answer

x+y = 25                  x=hits y=misses
9x-7y=33
7x+7y =  175
add
16x =   208
x =  13

13 hits and 12 misses