The function, f(n) = 70n - 400, models the profit of the instructor of a guitar class per month, where n is the number of students enrolled in the class.
How many students must be enrolled in the class for the instructor to make a profit?
How many
students must D0
month?
enrolled in the class if the instructor needs to make $1,000.00 profit per

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.