4 Pizzas. $14x4=$56 and you have $4 left over
-(-7y + 12) = 7y - 12
u are distributing the -sign through the parenthesis...so u take the number outside of the parenthesis (and if it just a sign, the number is 1)...and u multiply it by everything in the parenthesis.
-1(-7y + 12) = -1 * -7y + (-1) * 12 = 7y + (-12) = 7y - 12
If he had 12, he puts 6 of those in a single box, after that box is filled, he has six more he can put in. Kelvin has 2 boxes!
Slope of y=1-2x is -2
Using point intercept form:
y-1=-2(x-3)
y-1=-2x+6
y=-2x+7
Yes your answer is solved correctly
