The cost of renting a jumping castle includes a fixed charge of $325 for setup and delivery, and a variable charge of $175 for each hour the jumping castle is rented for. caitlin would like to rent a jumping castle for a party, and is willing to spend a minimum amount of $1200 and a maximum amount of $1725. solve for the range of hours "t" that she could hire the jumping castle for. give your answer as an inequality.

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"