If i have the equation: (x/y)= (l^-.5/k^-.5) to get rid of the negative exponents i flip l and k. do i need to flip x and y too?

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

What is x3+3x2−16x−48 divided by x−1?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0