Jared bought eighteen doughnuts to share with his coworkers. If each doughnut cost c cents, which expression represents his total cost?

1. 18 + c

2. 18 - c

3. 18 ÷ c

4. 18c

How do I do this? (3x^2+8) - (2x^2+1) So first I add like terms? 5x^2 + 8 + 1

Round 652,053,730 to the nearest hundred thousand

Find the thirteenth term of an arithmetic sequence if the first term is 3 and the common difference is 3

A radioactive substance decays according to the formula A=A0e^kt where A0 is the initial amount of substance (in grams) A is the amount of substance (in grams) after t years k is a constant The half-life of the substance is 10 years.

Alison wants to find out how much time people spend reading books. She is going to use a questionnaire. Design a suitable question for Alison to use in her questionnaire ...

Juan has 25 pieces of paper. Dante has 5 times as many pieces of paper as Juan. how many pieces of paper does dante have?

In math what is the GCF of of 4a and 9a^4?

Roy already has 10,368 frequent flyer miles, and he will earn 2,832 more miles from his round-trip flight to New York City. In addition, he earns 2 frequent flyer miles for each dollar he charges on his credit card.

Ramon drove 145 miles in 2.5 hours. What was his speed in miles per hour?

The ratio of red marbles to blue marbles is 3 to 7 she has a total of 80. how many red and blue marbles