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A piggy bank contains quarters and dollar bills. There is at least $18 in the piggy bank and at least 20 quarters. Which of the following systems correctly describe the possible number of quarters (q) and dollar bills (d) in the piggy bank?

Verified Answer :

texaschic101

0.25q + 1d > = 18
q > = 20

Answer:

0.25q + d ≥ 18

q ≥ 20

Step-by-step explanation:

A piggy bank contains quarters and dollar bills.

Let there be q quarters and d dollars.

There is at least $18 in the piggy bank.

i.e. 0.25q + d ≥ 18

piggy bank has at least 20 quarters.

i.e. q ≥ 20

Hence, systems which correctly describe the possible number of quarters (q) and dollar bills (d) in the piggy bank is:

0.25q + d ≥ 18

q ≥ 20

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