Ivanna got a prepaid debit card with $25 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store. The price of the ribbon was 14 cents per yard. If after that purchase there was $19.96 left on the card, how many yards of ribbon did Ivanna buy?

Ivanna bought 36 yards of ribbon

Step-by-step explanation:

you are easily find my answer correct by timing 14 by 36 and adding the answer to the remaining dollars on the debit card to get the original amount on the debit card.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50