One fourth of seventh grade students made honor roll the first quarter the number of honor roll students increased by 18 in the second quarter if 105 students made honor roll in the second quarter how many total seventh graders are there

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

you can't solve x because it is 2 linear equation and you only have one equation

answer: 819.89 miles across america

step-by-step explanation:

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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