Lincoln is working two summer jobs, making $13 per hour lifeguarding and $23 per hour tutoring. Last week Lincoln earned a total of $210 and worked 4 times as many hours tutoring as he worked hours lifeguarding. Determine the number of hours Lincoln worked lifeguarding last week and the number of hours he worked tutoring last week.

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.