Four expressions are shown below:

21x + 6

3 (7x + 2)

18x + 9

3 (6x + 3)

Which two expressions are equivalent to 3 (6x + 2 + x) ?

A and D

C and D

A and B

B and C

a child is collecting state quarters and new $1 coins. if she has a total of 23 coins, and the number of quarters is 9 more than the number of dollar coins, how many of each type of coins does she have?

Which can be used to describe an equivalent expression for (s Superscript 6 Baseline) Superscript negative 3? Adding the exponents will create an equivalent expression. Dividing the exponents will create an equivalent expression.

What percent of 863.6 is 380

What are the factors of the product represented below (3x+1) (2x+3) ?

an arts academy requires there to be 3 teachers for every 75 students and 6 tutors for every 72 students. How many students does the academy have per tutor?

Mark ordere wome balloons for a party that she is having. The balloons cost $4.50 each and there is a service fee of $12. The total cost is $79.50.

The ratio of the side length of Square A to the side length B is 4:9. The side length of Square A is 12 yards. what is the perimeter of Square B?

Manuel read a book for 3 1/8 hours on saturday and 2 5/8 hours on sunday. how many hours did manuel read over the weekend?

Evaluate the following expression for y=11 63-4y

Which has the same value as - 10 + - 3