Which of the following values of x makes the functions equal?

y=-1x+4
y=3x

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?