It costs $0.50 to download an individual song and $4 to download an album. Jada has $15 to spend downloading music.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Solve the equation by completing the square. x^2+2x=17

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.