I got a test in a few days so please help me
1) Given that p=r/4 and r=2v. find p in terms of v
This is a substitution problem. Since r=2v, you can plug that into p=r/4: p = 2v/4 = v/2.
P is "in terms of" v because it's by itself, and the only other variable in the equation is v.
El que pega primero pega dos veces.