11 billion in scientific notation

If I go tubing with 6 other people and we all go tubing. Two people can go on a tub at once for 3 minutes and everyone will go on a tub two times. How long are we going tubing for.

If 9 is subtracted from two-thirds of a number, the result is 7. find the number. the number is 3 the number is 10.67 the number is 24

Emily bikes 18 miles in 2 hours. Ella bikes 22 miles in 2.5 hours. Which rate is better?

A rectangular park has an area of 250 square feet. The length of the park is 7 feet more then twice the width, w of the park. Which equations, in terms of w, model this situation

Suppose a right cylinder was bent into a U-shape and was compared to another right cylinder. What can be said about their volumes?

What does 4x+5x-30=180 equal

Factor completely, then place the answer in the proper location on the grid. 16x^4 - 64y^8

Mr. Garcia has driven 60 miles, which is 2/3 of the way to his sister's house. How much farther does he have to drive to get to his sister's house?

Bob guessed there was 560 in they jar but there was actually 620. What percent was Bob's guess incorrect

The tires on Miguel's bicycle have a diameter of 28 inches. How many feet has Miguel traveled when the tires complete 15 revolutions? Use 3.14 for π. Round to the nearest tenth of a foot if necessary. ft