There is a fixed cost of $4325 in starting a widget business and it also costs $24 to produce each widget. Write a function to describe the total cost of producing x number of widgets.

4325+24x

Step-by-step explanation:

Fixed cost ($4325) is constant and does not vary with the number of widgets produced,

also, for every unit of widget the price increases by $24

If C(x) is the cost function then it should be expressed as

C(x)=4325+24x

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