Given that P = 2i – 3j and Q = -i –j, find P + Q

Y=4x^2+x-1 solve using quadratic formula

On saturday a souvenir shop had 125 customers. sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

What are the solutions to the following equation? |m| = 8.5 the value of m is equal to 8.5 and because each distance from zero is 8.5.