Please help it's urgent!Pls

c may bbethe most accurate one l m 55% sure

Its c fs :)

Step-by-step explanation:

Its c because x should be the exponent gl and hope this helps :)

Step-by-step explanation:

n=q-9

5n+25q=465, using n from above this becomes

5(q-9)+25q=465

5q-45+25q=465

30q-45=465

30q=510

q=17, and since n=q-9

n=17-9

n=8

So Melinda has 8 nickels and 17 quarters.