What is the coefficient in the expression 5x^2+3

The diameter of a circle measures 24ft. What is the circumference of the circle? Use 3.14 for pie, and do not round your answer. Be sure to include the correct unit in your answer.

Mary estimated that it would take 3 hours to write a book report, but it actually took her 5 hours. What is the percent error for her estimate? (Hint: subtract and then divide by actual number)

In the parking lot there are 150 convertibles and 600 minivans, for a total of 750 cars all together. What is the ratio of cars to minivans? (Reduce your ratio to lowest terms, for example reduce 15:6 to 5:2)

There were 60 seventh-grade students who signed up for soccer tryouts last year. This year, 48 seventh-grade students signed up for tryouts. What is the percent decrease in the number of students from last year to this year?

rory's older brother is saving to buy a used motorcycle that cost $3,550. he saves an equal amount of money each month for 6 months. about how much does he need to save each month to buy the motorcycle

3 divided by 57 answer

What is 20x+5y=15 for y?

The next term of the sequence is 48. (2, 4, 8, 16, 32, ...)

A motorboat left a harbor and traveled to an island at an average rate of 10 knots. The average speed on the return trip was 10 knots. If the total trip took 4.0 hours, how far is the harbor from the island?

Which polynomial is in standard form? 1+2x-8^2+6x^3 2x^2+6x^3-9x+12 6x^3+5x-3x^2+2 2x^3+4x^2-7x+5