How can you determine if two algebraic expressions are equivalent

If a rectangle has the perimeter of 2x+1 by x show that P = 6x+2

A radio station plays commercials for 5 1/6 minutes each hour. How many 31-second commercials can it play?

Janine has job offers from two companies. One company offers a starting salary of $28,000 with a raise of $3,000 each year. The other company offers a starting salary of $36,000 with a raise of $2,000 each year. a.

You are designing a rectangular pet pen for your new baby puppy. You have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width

Name the numerator and the denominator in each fraction. a. 11⁄12 b. 7⁄512 c. 12⁄10 d. 0⁄78

Which expressions are equivalent to 3√128x?

In a 56 pound mixture of sand and gravel, 14 pound is gravel. How much gravel is there in a 1-pound mixture?

6,845,309 rounded to the nearest hundred thousand

a rectangular auditorium seats 1118 people. the number of seats in each row exceeds the number of rows by 17. find the number of seats in each row

Whats b plus 11 equals 72