Mary can build 2 sand castles ( c ) in 4 hours ( t ). write an equation in the form of c=rt that represents the relationship between the number of sand castles (c) and time (t), where r is the constant of proportionality.

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Complete the synthetic division problem below. what is the quotient in polynomial form 2/16 -16