The cost of holding a childrens birthday party at a rollerskating rink is a function of n, thr number of people in the party. The cost function, C, can be represented with this set of rules: C(n) = {150, 0 < n < 12 260, 12 < n < 20 400, 20
How much does it cost to have a party with 9 people? What about 20 people?

Graph the function on the coordinate plane.

Which ratio is equivalent to 10: 85

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8