Answer:
The cost of a card is 4 dollars
The cost of a baseball is 18 dollars
Explanation:
13c + 9b = 214
3c + 8b = 156
(13c + 9b = 214) × -8
( 3c + 8b = 156) × 9
-104c - 72b = -1712
27c + 72b = 1404
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-77c = -308
÷-77 ÷-77
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c = 4
3c + 8b = 156
3(4) + 8b = 156
12 + 8b = 156
-12 -12
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8b = 144
÷8 ÷8
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b = 18
I hope this helps!