1. Consider the following system. If you used the substitution method, what would be your first step?
s y = 2x + 4
13x + y = -7
A. y = 2(3x + y)+ 4
B. 3x + y = 2(2x + 4) - 7
C. 2x + 3(3x + 4) = -7
D. 3(2x + 4) + y = -7
E. 3x + (2x + 4) = -7

7x+8y=-18, 4x-9y=-3 solve the system of equations

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left