1. (8 pts) Completely simplify the following expression (leave your answer in factored form). State the domain in set-builder notation.
x3 + 4x x2 + 8x + 15
f(x)
x2 - 16 x2 + x - 20

Identify the percent of change as an increase or a decrease. 75 people to 25 people response - correct increase decrease question 2 find the percent of change. round to the nearest tenth of a percent.