pls help me Here is a graph of the tide heights for a town in Delaware over a full day. For the graphed situation, describe the dependent and independent variable. How does the dependent variable change? Be specific as possible

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

How do you do the foil method with polynomials?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !