The table below represents the velocity of a car as a function of time: Time Velocity
(hour) (miles/hours)
X
у
O
50
1
52
2
54
3
56
Part A: What is the y-intercept of the function, and what does this tell you about the
car? (4 points)
Part B: Calculate the average rate of change of the function represented by the table
between x -Ti to x = 3 hours, and tell what the average rate represents. (4 points)
Part c: What would be the domain of the function if the velocity of the car was
measured until it reached 60 miles/hour and the car does not change motion? (2 points)

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b

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