A school purchased a batch of T-shirts from a company. The company charged $4 per T-shirt, and gave the school a $50 rebate. If the school had a net expense of $1,150 from the purchase, how many T-shirts did the school buy?

For each proportion find the unknown number x 1/5/8=×/15

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?