For a quality control test, a company checks the miles per gallon (mpg) for a simple random sample of n=100 minivans drawn from its current inventory. The average mpg of these 100 minivans is 15.6 with a standard deviation of 1.9 mpg. We want a confidence interval for the average mpg of all minivans in the company's inventory. Required:
Set up an approximate 95% confidence interval for the average mpg of all minivans in the company's inventory.

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function