Quinn can refinish hardwood floors four times as fast as Jack. They have to refinish 100 square feet of flooring. Working together, Quinn and Jack can finish the job in 3 hours. How long would it take each of them working alone?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad