A plane descends from a higher altitude to a lower altitude at a rate of 100 feet per second. Which equation models the change in altitude after 15 seconds? A. (15)(100) = 1500 feet
B. (15)(-100) = -1500 feet
C. (-15)(-100) = 1500 feet
D. (-15)(100) = -115 feet

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.

Hi my sisters and brothers can tell me the answer because i don’t understand the question

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%