The equation y = 26.6x - 14.5 is used to model the worldwide smartphone sales, y, in millions, each year, x, for a given company in its first 7 years selling smartphones. according to the model, what is the annual increase in the smartphone sales over this time period?

a.
3.8 million phones per year

b.
12.1 million phones per year

c.
14.5 million phones per year

d.
26.6 million phones per year

D.  26.6 million phones per year

Step-by-step explanation:

Given: The equation is used to model the worldwide smartphone sales (y) in millions, each year (x) for a given company in its first 7 years selling smartphones.

Here the slope of the linear function(coefficient of x) = 26.6

Since, slope is the rate of change of the variables.

Therefore,the annual increase in the smartphone sales over this time period= 26.6 millions phones per year.

OR

When  x=1

When  x=2

The annual increase =

hence, the annual increase in the smartphone sales over this time period= 26.6 millions.

about 168 miles

step-by-step explanation:

you divide them and then you get the answer i took this class this year

step-by-step explanation: