Jason recorded the prices of the seven race cars he sold this week in the table below. 126,000-1 140,000-2 180,000-1 400,000-2 819,000-1 part a: what is the mean value of these race cars in dollars? part b: what is the median value of these race cars in dollars? part c: if jason earns commission each week on his sales, should he use the mean or the median value to predict his commission next week? part d: justify your answer in part c using 3-4 sentences. your explanation should include at least 4 of the following words: -mean -median -outlier -data or data values -spread

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

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

step-by-step explanation: