Erika needs a test average of 85 or higher to make the honor roll. There are four tests in the term.
Her first three test grades were 78, 80, and 88.
Which inequality could be used to find what she needs to score on her fourth test, x, in order
to make the honor roll?

dont think so

step-by-step explanation:

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

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.