4. A 50 meter tall tree casts a shadow that is 60 meters long. Find the distance between the top of the tree and the shadow .

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 ?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3