2.) LaTeX: x^2-5x-84 pls help

(x-12)(x+7)

Step-by-step explanation:

x^2 - 5x - 84

You find the factors of 84:

1,84; 2,42; 3,28; 4,21; 6,14; 7,12

7 and 12 are 5 apart, so we use them:

(x - 12)(x + 7)

The 12 is negative because it's greater than 7, and the coefficient of x is negative 5.

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart