Fuel efficiency for a certain vehicle is given by F(v) = -0.018v2 + 1.48v + 1.8 where F(v) is the
fuel efficiency in miles per gallon (mpg) for a vehicle traveling v miles per hour (mph).
a. What speed (v) will yield the maximum fuel efficiency? (Round to the nearest mile per hour)

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

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so

step-by-step explanation:

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8

step-by-step explanation:

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)