For which values is this function undefined? x + 2/x2 – 8x – 20
a. -2, 10
b. -20, -8
c. -5,-4
d. -5,4

Which graph corresponds to the function f(x) = x2 + 4x – 1?

An architect builds a model of a park in the shape of a rectangle. the model is 40.64 centimeters long and 66.04 centimeters wide. one inch equals 2.54 centimeters. use the ratio table to find the ratio of the length to the sum of the length and width in inches and in simplest form. length 40.64 width 66.04 a. 8: 21 b. 13: 21 c. 21: 13 d. 21: 8

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )