What is the perimeter of a triangle with side lengths of 9, 12, and 4x?

1. 25

2. 25 + x

3. 21x

or

4. 21 + 4x

What is 40% of 45 with steps?

Calculate the radius of the circle a = 3.6yds2

you have $47 to spend at the music store. Each cassette tape costs $5 and each CD cost $10. write a linear inequality that represent this situation. let x represent the number of tapes and y the number of CDs

A regular hexagon has sides of 6 feet. What is the area of the hexagon?

What are some ways you could break apart 7 times 9 using the distributive property

If you are 29 years old, you have been alive for about 920,000,000 seconds. write this number in scientific notation.

What is 10/6as a improper fraction

Henry is considering purchasing a mountain bike he likes to brakes cost $500 and the other cost $600 he tells his dad that the bike that is where expensive is 20% more than the cost of the other bike is he correct

Molly is making a sign in the shape of a trapezoid. One base is 18 inches and the other is 30 inches. How high must she make the sign so its area is 504 square inches?

While hiking, Sanjay went up 200 meters. If Sanjay started at 500 meters above sea level, which integers represents his elevation now?