Ama wants to sew protective masks to distribute to her friends and family. She finds an online pattern that requires the use of elastic. 1 yard = 3 feet She has 7.5 yards of elastic in a box. 1 foot = 12 inches If one mask requires 14 inches of elastic, how many masks can she make? Explain. 1) Predict your answer before solving and, 2) explain what you have to know and be able to do to solve the problem.)

c

-by-step explanation:

it would be c

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

inverse operation of addition