The cost to rent a paddleboat at the city parkincludes an initial fee of $7.00, plus $3.50 perhour. Which equation models the relationshipbetween the total cost, y, and the number ofhours, x, that the paddleboat is rented?

Step-by-step explanation:

10.50

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