HELPP PLZ AND THANK YOU

so im doing an assignment and its asking me
How much of the activity did you complete in the time period? (Example: I did 24 sit-ups in one minute).
I read 7 pages in 4 minutes
I read 3 pages in 3 minutes
Which of these variables is your dependent variable?
(PLEASE NO GUESSING)

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.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?