I need help with these problems and my book doesnt explain it very well.
Solve the formula I = Prt for P
Solve the formula A = P(1+rt) for r
Solve x + yr = z for z
dicide both sides by P:
A/P=1+rt.
Subtract 1 form both sides (as two things that are equal are still equal when
the same thing is added or subracted from both)
A/P - 1 =rt
Divide both sides bt t:
(A/P - 1)/t =r,
or:
r = (A/P - 1)/t,
z= x + yrSolve x + yr = z for z
(if something is equal to a thing, then the thing is equal to that something)
RonL