Write an algebraic expression for the following problem next weekend a student wants to study for his four classes if he has h hours to study in all and he wants to devote the same amount of time to each same amount of time to each class how much time will he study per class?

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

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step-by-step explanation:

answer: the answer is ann

2 1/2 feet

step-by-step explanation: