The area of a circle is approximately 3.14 times the radius squared. Which of the following expressions is a correct way to write this, if the radius is x?

A. (3.14x)^2

B. 2(3.14)x

C. 3.14x^2

D. x(3.14)^2

Translate the difference of five squared and n into symbols.

A. 5^2 ÷ n

B. 5^2x n

C. 5^2- n

D. 5^2+ n

Merrill bought m notebooks for $2.50 each and n pens for $1.25 each. Which expression best shows how much she spent?

A. 2.50m + 1.25n

B. 3.75(m + n)

C. 2.50 + m + 1.25 + n

D. mn + (2.50)(1.25)

macabresubwoofer Oct 16, 2019

#1**+2 **

1. **C**, you are only squaring the x and multiplying it by 3.14, not anything else

2. **C, **to find the difference of two things, you subtract one from the other

3. **A**, you are buying m notebooks and each is 2.50, so the total is 2.50m and the same goes for the pens but n and 1.25 instead.

Oofrence Oct 16, 2019

#1**+2 **

Best Answer

1. **C**, you are only squaring the x and multiplying it by 3.14, not anything else

2. **C, **to find the difference of two things, you subtract one from the other

3. **A**, you are buying m notebooks and each is 2.50, so the total is 2.50m and the same goes for the pens but n and 1.25 instead.

Oofrence Oct 16, 2019