Which ordered pair is a solution of the equation y=x-2? A (3.1)
B (1,3)
C (-1,3)
D (3,-1)

A

Step-by-step explanation:

y = x - 2

Well A should work. Let's try it.

y = 3 - 2

y = 1

So (3,1) is a solution

1,3

1 - 2 = -1. That's not the same as 3 so B does not work.

(-1,3)

y = -1 - 2

y = - 3  So this doesn't work either.

3,-1

y = 3 - 2

y = 1           just as we found for A. D is not an answer. The answer is A.

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)