What are the zeros of the function y = x2 + 10x – 171, and why?
a) the zeros are x = –19 and x = 9 because in factored form, the function is y = (x – 19)(x + 9).
b) the zeros are x = –19 and x = 9 because in factored form, the function is y = (x + 19)(x – 9).
c) the zeros are x = 19 and x = –9 because in factored form, the function is y = (x – 19)(x + 9).
d) the zeros are x = 19 and x = –9 because in factored form, the function is y = (x + 19)(x – 9).

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

read more on -

step-by-step explanation:

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours