If an elevator goes 15 feet above ground in a building, it is said to be at +15 feet. if it moved to 3 feet below the ground, it is said to be -3 feet. what is the meaning of zero, positive feet, and negative feet?

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

What is the maximum of the sinusoidal function