Dr. smith needs 24 grams of salt for each student to do an experiment. She has 1.2 kilograms of salt on hand. How much more salt, in grams does she need?

Can someone me and plz do the problem

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.

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?