Gretchen bout some large vases for 11$ each some small vases 7$ each on clearance. If she bout 18 vases for 142$, how many large vases and small vases did she buy

Step-by-step explanation:

Let x represent the number of large vases Gretchen bought. Here total cost was then ...

  11x +7(18-x) = 142

  4x + 126 = 142 . . . . .simplify

  4x = 16 . . . . . . . . . . . subtract 126

  x = 4 . . . . . . . . . . . . divide by 4: number of large vases

  18-x = 14 . . . . . . . . . number of small vases

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Gretchen bought 4 large vases and 14 small vases.

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

answer: 20

step-by-step explanation: