You are going to the gas station with your mom. The cost of a car wash is $5.00. The cost per gallon of gas $3.10 per gallon. Write a linear equation to represent the total cost of a trip to the gas station.

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  c = 5.00w +3.10g

Step-by-step explanation:

Let w represent the number of car washes purchased, g represent the number of gallons of gas purchased, and c represent the total cost of the trip.

  cost = (cost of car washes) + (cost of gas)

  c = 5.00w + 3.10g

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