Keith collects vintage Hot Wheels®. He came home with 60 new cars and sold 45% of them at an antique mall. How many Hot Wheels cars were sold? A 27 cars were sold

24 cars were sold

30 cars were sold

32 cars were sold

.19875994384

step-by-step explanation:

1699/ 8548

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

10+4√2 is the answer. i dont have the time to explain.