Mrs. Kemp began the school year with 20 students in her kindergarten class. She had 23 students at the end of the year. What was the percent of increase in the number of students from the beginning of the year to the end of the year?

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a