Use properties of addition to evaluate the expression.
(-64) + ) +20)
enter your answer in the box.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

What is the gcf of 20c^3-5c^4+30c^6