The lengths of two sides of a triangle are 9 inches and 15 inches. Which could not be the length of the third side? A 5
B 9
C 12
D 20

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 ?

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

How can you construct perpendicular lines and prove theorems about perpendicular lines