How much does 71 pennies weigh in oz? (ounces)

Bruce is getting materials for a chemistry experiment his teacher gives him a container that has 0.25 liter of liquid in it.bruce need to use 0.4 of this liquid for the experiment. how much liquid will bruce use?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Oliver read for 450 minutes this month his goal was to read for 10% more minutes next month if all of her medicine go how many minutes will you read all during the next two months