The Candle Company is designing a new cylindrical candle. They are looking at four different molds. Which mold will use the least amount of wax? Candle Mold Choices Mold Diameter Height A 2 inches 7 inches B 2 inches 4 inches C 3 inches 3 inches D 4 inches 3 inches Recall the formula V = pi r squared h. Mold A Mold B Mold C Mold D

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

step-by-step explanation: