7 + 2(x - 3) + 5x a. 7 + 2x - 6 + 5x Distributive Property
7 + 2x +(-6) + 5x Definition of Subtraction
b.7+(-6) + 2x + 5x Associative Property of Addition
c. 7+(-6) +(2+5) Distributive Property
d. 7+ (-6) + 7x Addition
1 + 7x
Addition
7x + 1
Commutaive Property of Addition
2.
The expression 7 + 2(x - 3) + 5x is simplified correctly in the correct order. Which of the steps has an incorrect justification?
step d
step c
step b
step a

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2xdesmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x