Evaluate the expression 2.1 + (–3.7h) + 1.9h – 1.4

Solve the system by the elimination method. 2x + y - 4 = 0 2x - y - 4 = 0 when you eliminate y, what is the resulting equation? a.x = 0 b.4x = -8 c.4x = 8

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

An animal shelter has 21 puppies. if the puppies are 28% of the total dog and cat population , how many dogs and cats are in the animal shelter