What is the value of the expression |x+y| when x=-7 and y= -18

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x