Graph that a vertex of (-1,1) and a leading coefficient of a=2.

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 ?

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years