Rob spent 25% more time on his research project than he had planned he spent an extra h hour on the project which of the following expressions could represents the number of hours rob actually spent on the project.

What signals you that factoring by grouping is the best method to use when factoring a problem?

The green family is a family of six people. they have used 4,885.78 gallons of water so far this month. they cannot exceed 9,750.05 gallons per month during drought season. write an inequality to show how much water just one member of the family can use for the remainder of the month, assuming each family member uses the same amount of water every month.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?