Simplify the expression 8-4n+9n+7+10n

Subtract: 16a 2 - 32a + 9 from 12a 2 + 60a - 8.

Select the correct answer. Which is the oldest form of money still in existence today? A. paper money B. metallic money C. fiat money D. fractionally backed paper money

The variables a and b represent positive numbers. When you find the difference a - ( - b), do you expect the result to be less than or greater than a? What is a is negative and b is positive? Explain.

Students in 7th and 8th grade were asked the types of movies they prefer. The results of the survey are shown in the two-way table. Which statements are correct? Check all that apply.

A triangle has one angle measuring 3x degrees. A second angle is 2x+20 degrees and the third angle measures 4x-20 degrees. What it's the value of x?

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.