The GDP of the People's Republic of China from 2006 to 2015 is shown in the scatterplot below. The line of best fit for the data is also shown. For 2010, the actual
GDP was approximately how much lower than the value predicted by the line of best fit?

A) $4,100,000,000
B) $390,000,000,000
C)$4,000,000,000,000
D) $6,400,000,000,000

4400

step-by-step explanation:

answer: 1inch=7days  

12inch=12*7=84days

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

explanation:

step-by-step explanation: