Which expression is equivalent to (r^-7)^6?

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

For the word below, click on the drop-down arrows to select the root and its meaning. version