Ashley has two jobs: moqing lawns and babysitting. She earns 10$ per hour mowing lawns and 8$ per hour baby sitting. She wants to earn at least 160. Which of the following is a possible combination that will satisfy the constraint above?​ A. (4,10)
B. (8,5)
C. (0,16)
D. (10,15)

its definatley   this on your answer choice?

quit

step-by-step explanation:

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