Dale collects fidget spinners. He has 400 total fidget spinners. 80% of them are made of plastic. Select all expressions that can be used to find the total number of fidget spinners that are made of plastic.
80 over 100 • 400
0.80 over 100 • 400
0.80 • 400
0.8 • 400

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2