How to figure out hourly rate?

Put twenty-one thousand, seventy in standard form

Tickets to a local movie were sold at $4.00

4 is 80% of what number?

Gabriel gave the clerk a $5 bill to pay for a half gallon of milk that cost $1.06 and a box of cereal that cost $2.39. How much money should he get back?

Given that a vector is the directed line segment from P (0,0) to Q (3,2) what is the magnitude of that vector

The width of a rectangle is 6 units less than it's length x. Which expression shows the width of the rectangle?

Systems of equation

Is there something times 625 that equals 2,125

Which word problem has the greatest rate of change? Sam makes $25 per hour as well as a $100 bonus each month working for his uncle. Car company A rents cars for $20 per day with an additional cost of $.75 per mile.

Joey had $254 to spend at the video games store. He was able to buy 9 video games and had $29 left. How much did each game cost?