Need help with this please and thanks :)
1 answer:
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y - y₁ = m(x - x₁)
y - (-4) = 1(x - 8)
y + 4 = 1(x) - 1(8)
y + 4 = x - 8
- 4 - 4
y = x - 12
Answer:
See below.
Step-by-step explanation:
The question doesn't ask you to find the area, it just ask for the expression that represents the area.
The area of rectangle is A=bh, where b and h are each of the side lengths.
Since we know the sides are (2x+7) and (5x+9), this means that the expression for the area of the rectangle is:
To find the degree and classification, expand the factors:
Thus, this is a second degree quadratic expression
And from Part A, when we multiplied (2x+7)(5x+9), we got another polynomial (10x^2+52x+63). Thus, this rerepresents the closure property of polynomials, where multiplying a polynomial by another gets another polynomial.
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