PLS HELP ASAP, I WILL MARK BRAINLIEST FOR THE FIRST CORRECT ANSWER.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?