A customer purchased x light bulbs for $2.17 each. The customer gives the cashier $15.00 and gets $4.15 in return. How many light bulbs did the customer buy? Enter your answer in the box. Please help by today! Thank you! <3

Part a : solve - vp + 40 < 65 for v . part b : solve 7w - 3r = 15 for r show your work!

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?