A cash register contains $20 bills and $50 bills with a total value of $810. if there are 21 bills total, then how many of each does the register contain?

How do you simplify 2x+3y+2 (x-y) - 3x using distributive property show each step in your calculation, justify each of your steps using number properties.

Simplify square root of negative 72. negative 6 square root of 2 6 square root of negative 2 6 square root of 2 i 6 i square root of 2

Simplify (5b10) (-2b-3).

Which is bigger nine halves or nine quarters? How do you know?

What is the lcm for 21,28, and 35

Three equilvant ratios to 5/7

What is the answer to 6d+8=14+3d?

William eats at a restaurant and the cost of his meal is $24.00. Because of the service, he wants to leave a 20% tip. What is his total bill including tip?

Emily convinced her mom to buy a giant box of her favorite cereal. Her mom doesn't think the box will fit on their shelf. The volume of the box is 10,000 cm^3 The base of the box is 25 cm by 10 cm. How tall is the box of cereal?

A rectangular prism is completely packed with 180 cubes of edge length fraction 1 over 3 inch, without any gap or overlap.