Michelle bought a gift priced at $5.00.she gave the store clerk $20.00.she received three bills as change. what bills did she receive?

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

Can someone answer this question for me

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.