Tamara has decided to start saving money for spending money for her first year of college. Her money is currently in a large suitcase under her bed, modeled by the function s(x)=450. She is able to babysit to earn extra money and that function would be a(x))=6x-2, where x is measured in hours. Explain to Tamar how she can create a function that combines the two, and describe any simplification that can be done

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

maya’s expression will generate the wrong sum because she violated the commutative property.

step-by-step explanation: