Charles works his part time job for 23 hours each week and makes $9.75 an hour. how much will he make in 4 weeks?

Dr.cooper just started an experiment. he will collect data for 8 days. how many hours is this

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?