A women is trapped in a burning building. To rescue the woman, a fireman places the bottom of a large ladder 12 feet from the base of the building. If the ladder is 37 feet long, find the height from the base of the building to the top of the ladder.

Rena used the steps below to evaluate the expression , when . step 1: substitute into the expression. step 2: simplify the parentheses. step 3: evaluate the power to a power. step 4: use reciprocals and find the value. in which step did rena make the first error?