More than one question!! (1) Frankie works after school at the carwash. He makes $50 every pay period, plus a $10 commission (x) on each car he cleans. Choose the linear function that represents his total pay each pay period (y). A
y = 50 + 10x
B
y = 50 – 10x
C
x = 50 − 10y
D
x = 50 + 10y (2) A new discount cell phone service charges $55 a month plus $15.00 for every line on the plan. Choose the linear function that represents the relationship between the number of lines (x) and the cost of the plan (y).
A
y = 70x
B
x = 70y
C
y = 55 + 15x
D
x = 55 + 15y (3) Alicia had $375 in her savings account. She withdraws $12 a week to buy lunch. Assuming she does not deposit any more money. Write a linear function to represent how much money (y) Alicia will have after x weeks.
A
y = 375 + 12x
B
y = 375 − 12x
C
x = 375 + 12y
D
x = 375 − 12y (4) Use the table of values to write a equation that shows y as a function of x.
x -2 -1 0 1 2
y 4 1 -2 -5 -8
A
y = 2x − 3
B
y = -2x − 3
C
y = 3x − 2
D
y = -3x − 2