Select the quadratic expression that represents the product below.

(2x+5)(7-4x)

a.
-8x2 + 6x - 35
b.
-8x2 + 34x - 35
c.
-8x2 - 6x + 35
d.
-8x2 - 34x + 35

C

Step-by-step explanation:

Given

(2x + 5)(7 - 4x)

Each term in the second factor is multiplied by each term in the first factor, that is

= 2x(7 - 4x) + 5(7 - 4x) ← distribute both parenthesis

= 14x - 8x² + 35 - 20x ← collect like terms

= - 8x² - 6x + 35 → C

C.  -8x² - 6x + 35

Step-by-step explanation:

(2x+5) (7-4x)

2x · 7 + 2x · -4x + 5 · 7 + 5 · -4x

14x - 8x² + 35 - 20x

-8x² + 14x - 20x + 35

-8x² - 6x + 35

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180