First substitute the given values into the formula obtained from the inside- back cover. Then manipulate the

Question:

First substitute the given values into the formula obtained from the inside- back cover. Then manipulate the resulting equation to solve for the unknown variable. Obtain dollar amounts accurate to the nearest cent and other quantities to three-figure accuracy.
Use formula (5-3) to obtain X if NI = -$542.50, CM = $13.50, and FC = $18,970.