Look at the model at the right. Does it represent an equation that has one solution, no solutions, or infinitely many solutions? Explain how you know .

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?