I need help on this question

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

Use the distributive law to multiply. 3(4x + 5y + 6)

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second