When Connor was 16, he bought his first car. It had 1
.
67
×
10
5
miles on it. Connor is now 55 and wants to buy his dream car. He wants a new car or a used one with low miles. The car he ends up buying has
4
.
35
×
10
3
miles.

How many times greater were the miles on his old car than his new car? Round to the nearest whole number.

21

jk it's 20

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

i don't think there is enough