The cost of a basketball is $4 more than four times the cost of a tennis ball. Andy pays $28 toward buying a basketball and two tennis balls. The cost of each tennis ball is
A. $3
B. $4
C. $5
D. $6
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The cost of a basketball is $4 more than four times the cost of a tennis ball. Andy pays $28 toward buying a basketball and two tennis balls. The cost of each tennis ball is
A. $3
B. $4
C. $5
D. $6
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Answer:
B. $4.
Step-by-step explanation:
Let x be the cost of a tennis ball.
The cost of a basketball is 4x + $4.
Andy pays $28 toward buying a basketball and two tennis balls, so 4x + $4 + 2x = $28.
Combining like terms, we get 6x + $4 = $28.
Subtracting $4 from both sides, we get 6x = $24.
Dividing both sides by 6, we get x = $4.
So the answer is B. $4.