The initial cost of a cup of soda is $3. Each refill costs $0.60. So, the equation representing the amount a person spends on soda is:
y = 3 + 0.6x
Therefore, the correct answer is:
D. y = 0.6x + 3
On Fridays at the ballpark, a cup of soda $3, and each refill costs $0.60. If x represents the number of refills, which of the following equations represents the amount a person spends on soda.
A. y=3x+3.6
B. y=0.6x+3
C. y=3x+0.6
D. y=0.6x+3.6
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