Reed is purchasing an X-Box One. He made an initial payment of $75 to the store, and will pay $15 each month until the system is paid off. Which equation represents the relationship between x, the number of monthly payments Reed has paid, and t, the total amount that Reed has paid the store? A. t = 75x + 15 C. t = 15x + 75

B. t = 15x - 75 D. Not Here

C.) T=15x+75

its 15 dollars each month and since you don't know the number of months the variable would correspond with 15 and you just need to add 75 onto it

C. t = 15x + 75

Step-by-step explanation:

since you already payed the 75 dollars you add it and you multiply 15 by x because x is the number of months you pay

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18