It Costs $4 to skate each hour and there is a one-time fee of $5 for the skate rental. Which expression represents the cost to skate for someone who has to rent skates?

Find an equation (in term of x) of line through the points (-1,3) and (1,4)

Which equation matches the graph shown ?

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet