Solve the equation A =1/2 bh for h

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

Could someone with number 1 and 2

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?