The following table shows the fuel efficiency (in miles per gallon) of a car in relation to the speed that it is traveling (in miles per hour). Speed Fuel Efficiency 15 20.4 25 27.2 35 28.3 45 29.0 55 30.1 65 27.6 75 23.1 Use a graphing or online regression calculator to find the quadratic function of best fit for this set of data. Express the function in standard quadratic form.

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

c > -10.55

step-by-step explanation:

$649.60

step-by-step explanation:

one fourth of 9% = 2.25%

gavin is correct in saying : the equivalent quarterly interest rate would be

2.25%.