Which expression has a greater value. 21-3+8 or - 14+31-6

A one-dollar bill is 0.0043 inch thick. If you had a billion one-dollar bills and made a stack of them, how high in miles would the stack be? Remember that there are 12 inches in a foot and 5280 feet in a mile.

Gretchen has 50/100/50 liability insurance with a $500 deductible. While parked on the street, another car hits hers and then leaves the scene. There was $2,350 worth of damage. How much of the cost will her insurance pay?

In ΔQRS, the measure of ∠S=90°, the measure of ∠Q=54°, and RS = 26 feet. Find the length of QR to the nearest tenth of a foot.

Mrs. Kenders earns $20 per hour and works 40 hours per week. She pays 5% of her weekly earnings to state taxes and 25% of her weekly earnings to federal taxes. After the combined taxes have been deducted, how much does Mrs. Kenders earn each week?

Explain the steps necessary to find the center and radius of the circle below. x2 + 4x + y2 - 6y = 9 Then, find the center and the radius of this circle and sketch the graph of the circle.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.