A student has a container with a volume of 0.5 liter. She estimates the volume to be 0.6 liter. By what percent is the student's estimate off?
(Round to the nearest percent as needed.)

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent

What are the solutions of the following system? y=-2x^2 y=x-2