What is the meaning of the point with an x-coordinate of 2? Speed of Airplane
18
16
14
Distance (miles)
2 3 4 5 6 7 8 9
Time (minutes)
A. In 1 minute, the airplane travels 2 miles.
B. It takes the airplane 9 minutes to go 2 miles.

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

19

step-by-step explanation:

multiply each one by 3.14

step-by-step explanation:

8987678

step-by-step explanation: