An exponential equation with an h and k values

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Which statement best explains why ben uses the width hi to create the arc at j from point k

Find the zeros of each function. f(x) = 6x^2 - 7x - 20