Use mental math to solve the problem.

Mario sold his old skateboard for $45. If he buys a

new skateboard for double the price that he sold

his old one, how much did he pay for his new

skateboard?

What's the perimeter of a square with a side measurement of 6 inches

The function f (t) = 2.5t + 50 describes the total cost of ordering shirts, which includes the price per shirt and the one-time setup fee. Which of the following statements is true? A. Each shirt costs $50. B. The setup fee is $2.50. C.

How do you do prime factorisation for 48/72?

Solve for y. 50/90-y=5/18

Which values are in the solution set of the compound inequality - 8 < 3x + 7 ≤ 10?

A wise man once said "300 reduced by 3 times my age is 138"

Write 4.1 - 3 using words

The eights of the students in ms. Mill's class ride the bus. if there are 24 students in the class, how many students ride the bus? Explain how to use equivalent frations to solve

When a product of intergers has an even number of negative factors then the sign of the product is what

Use full sentences to describe why the product of x^3 and x^7 is x^10