Evaluate 8a^3b^-2 for a=4 and b=-5

Which number, rounded to the nearest ten-Thousand is 60,000?

2x - 3 = - (4x + 9)

Which diagram shows the correct method of determining a resultant vector?

S = 2πrh + 2πr2 for h

Round 5,370,288 to the nearest hundred thousand

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.