One serving of chad's favorite cereal contains 1 1/4 ounces how many servings are in a 15 1/3 ounce box

There are 12 and 4/15 servings

Step-by-step explanation:

In order to find how many servings there are, divide the amount in a box by the amount in a serving.

15 1/3 / 1 1/4

Now change them to improper fractions.

46/3 / 5/4

Now complete the operation.

184/15

12 4/15

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