Set up the equation relating the new ratio of broth to solution to the new percentage of broth to solution.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

answer: y=0 if that is what u r looking for

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8