Ihave to use the limit definition to find the slope of the tangent line to the graph of f at the given point. how do i do this?
f(x) = 9 − x^2, (3, 0)

Given this information, which expression must represent the value of b?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Find the slope of the line passing through a pair of points