Identify whether the problem is a percent increase or a percent decrease. A shirt originally costing $20 is marked with a 15% discount.

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.

Solve for x and select the correct answer

Five friends found a dollar on the ground and decided they each should get 1/5 of it. what amount of money will each friend get? $0.05 $0.20 $0.30 $0.80