Simplify each expression (4r^3+3r^4) - (r^4-5r^3)

Steven is x years old. John is 3 years older than Steven. In terms of x, how old will John be in 6 years?

What is 37 and 1/2 simplified?

A grocery store sells three different types of quantities of sugar a 1-pound bag cost more than $1.10 a 2 pound bag costs $1.98 83 pound bag cost 2 and eighty-five $2.85 describe how the unit cost changes is the quantity of sugar increases

17 heartbeats in 15 seconds as a unit rate

Write a number whose digit in the tens place is ten times the digit in the ones place

How do i work out perimeter?

Anton is training for a cross-country race. He ran 2 2/4 miles on Saturday and 3 1/4 miles on Sunday. How much farther did Anton run on Sunday? How do you know?

If the squareof a positive number is increased by 3 times the number the result is 54 find the number

Volume is the amount of space an object takes up. False True

How many? one-to-one correspondences are there between two sets with 7 elements? each?