The total amount they spent is the cost of pizza and 4 large drinks. This amount is also the sum of the amount of gift certificate and the cash $13.20. Let x be the price of each drink. The equation would be,
13 + 4x = 6 + 13.20
The value of x from the equation is 1.55. Thus, each large drink costs $1.55.
It equals 10 are supposed to divide the whole line by 3 to get the smaller segment then double it to get the larger segment
The answer to this is x < -2
