The demand and supply equations for a good are given by; 2p= -qd + 125, 8p= qs+45, find the equilibrium price and quantity

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

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 ?

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet