For a fundraiser, the seventh grade class sells 45 submarine sandwiches. they collect a total of $150.75. what is the cost per submarine sandwiches

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Simply 8x squared + 5(7x squared- x) - 2x =

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?