The following data points represent the volume of gas in each race car driver's tank (in liters).
4,5,13,?
If the mean of the data set is 7 L, find the missing volume of gas.

6

Step-by-step explanation:

28 divided by 4 = 6

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

110

step-by-step explanation:

based on the question i am guessing that it is a typo for abc