Marta went to the farmer's market to buy oranges. the oranges that are 3 inches in diameter cost 25 cents per dozen. the oranges that are 4 inches in diameter are 50 cents per dozen. marta chose the 3-inch oranges. did she make the more economical decision? explain your answer?

no

Step-by-step explanation:

If we consider the volume of each orange ( we have considered the orange as a perfect sphere)

we have the volume=(4/3) * π R^3 where is the orange radius

for 3 inch diameter de volume is =1.33*3.1415*3.37 inch^3

for 4 inch diameter de volume is =1.33*3.1415*8 inch^3

Taking into account a dozen of oranges we have to multiplier by 12 both orange volume are:

V dozen 3-inch= 40.44 inch^3 (paying 25 cent)

V dozen 4-inch= 96.00 inch^3 (paying 50 cent)

If she want to buy more that one dozen is economical  better choose  the 4 inch oranges

5+2x=a

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