5
1/4n + 3
Plug 8 in for n so 1/4(8) + 3
1/4 x 8 = 2
2 + 3 = 5
His school, but who is he?
-5x+y=-3
3x-8y=24
Substitution method. Solving for the first equation, because it's easy.
y=-3+5x
Plugin to the other equation.
3x-8(-3+5x)=24
Simplify: 3x+24-40x=24 (Remember, multiplying negatives makes it positive.)
Simplify: -37x + 24 = 24
Subtract: -37x = 24-24
-37x=0
x=0
Plug back into the first:
y=-3+5(0)
y=-3+0
y=-3
Option A
It would be 68 degrees for each angle
To simplify the product obtained by multiplying the binomial and trinomial, combine like terms.
x ³ + 3x² - x + 2x² + 6x - 2
x³ + (3x² + 2x²) + (-x + 6x) - 2
Further simplification leads to the answer,
x³ + 5x² + 5x -2
This is the first among the choices.
