Evaluate the expression when w=3,x=-2,y=6 and z=0.5 yz/w + 2x

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

The ratios of boys to girls on a soccer league is 2: 5. if there are 28 boys, how many girls are playing soccer? extra points! will mark as brainiest asap