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The scatter plot shows Leanna's elevation above sea level during a hike. The trend line passes
through the points (30,1070) and (75,1680), If Leanna starts at 663 feet above sea level and
maintains the same rate, how far above sea level will she be after one hour?
Click the icon to view the scatter plot.
The y-innercept is 663 and the slope is. Thus, the equation for the trend line is y=[x+]
(Type integers of decimals rounded to two dedral places as needed.)
After one hour, her altitude will be feet above sea level.
(Type an integer or decimal rounded to two decimal places as needed.)

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

a natural event such as a flood, earthquake, or hurricane that causes great damage or loss of life.

step-by-step explanation:

the answer is  

d.

21

i did this one. so you should get it right.

: d

step-by-step explanation: