A bacteria culture starts with 150 bacteria and after 4 hours the population consists of 250 bacteria. what is the rate of the increase to the nearest percent?

a. 11%

b. 13%

c. 15%

d. 17%

The spinner shown is divided into 8 equal sections. The arrow on this spinner is spun once. What is the probability that the arrow will land on a section labeled with a number greater than 3 ?

Your bill at a restaurant comes to $56. You want to leave a 15% tip. How much should you leave?

A bag contains 4 red marbles, 16 yellow marbles, 5 purple marbles, 16 blue marbles, and 10 green marbles. What is the probability of pulling out a red or blue marble?

Landon is building bookshelves. Each shelf holds 34 books. There are 1265 books. How many shelves will he need to build

Mrs. Barritz is packing food bags for the sick. Because of the special health needs of the people to whom they will be delivered, 10 less that one forth of the bags will include some diabetic food

ellen sells mugs that are in boxes in the shape of a cube. The edges of the boxes have a lenght of 1/2 foot. Ellen can completely fill a container in the shape of a rectangular prism with 378 boxes. What is the volume of her container?

1. 7/8 - 1/2 2. A security camera rotates 30° every 10 seconds. how long does it take the camera to rotate 360°?

What is the answer to 6 * 4/5

What is the distance, to the nearest hundredth, from (6, 5) to (-3, - 8) ?

My number has 2hundreds. The tens digit is 9more than the ones digit. My number is=