Asoccer ball costs $29 at a sporting goods store. it is going on sale for 30% off. what is the cost of the ball after the discount?

Np4=12np2 with clear explanation.

The depreciation per unit for a company

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2