Final answer:
The balance remaining on the gift card after 6 uses is $80, as determined by substituting x with 6 in the equation y = -20x + 200.
Step-by-step explanation:
The student's question relates to calculating the remaining balance on a gift card after a certain number of uses, based on a given mathematical equation.
The equation provided is y = -20x + 200, where y represents the remaining balance in dollars and x represents the number of uses. To find the balance after 6 uses, we substitute x with 6:
y = -20(6) + 200
y = -120 + 200
y = 80
Hence, the amount remaining on the gift card after 6 uses is $80.