Answer:
I am pretty sure the answer is C.
Step-by-step explanation:
Since the total amount of quarters and dimes Javier has is 24, we can use the variables d (representing the dimes) and q (representing the quarters) and come up with d + q = 24 for the first part.
for the second part, we know that every dime is worth 10 cents, or, .10 and every quarter is worth 25 cents , or .25 so for the second part, we can come up with the equation .10d + .25q = $3.75 .
i hope this helps (: