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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. 2(3.14)x


B. x(3.14)^2


C. 3.14x^2


D. (3.14x)^2

 

 

Merrill bought m CD's for $12.50 each and n greeting cards for $1.95 each. Which expression best shows how much she spent?


A. 12.50m + 1.95n


B. 12.50 + m + 1.95 + n


C. 14.45(m + n)


D. mn + (12.50)(1.95)

 Nov 18, 2019
 #1
avatar+105370 
+2

C.  3.14 x^2

 

A. 12.50m + 1.95n

 

 

cool cool cool

 Nov 18, 2019

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