An instructor chooses 8 students to answer questions from a class of 15. how many different groups of students could be chosen

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

What is the value of x in the this question ?

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)