On a camping trip to the mountains, you use7/8 of a tank of gas to travel 3/4 of the way to the mountains. How many tanks of gas will you need to travel another 5/7 of the entire distance to the mountains?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Find the maximum value of p= 4x + 5y subject to the following constraints :

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.