If I have 20 dollars then i buy 13 dollars worth of food how much dollars do i have .

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

What expression is equivalent to 42x-56y

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20