Answer:
C. d + q = 5.80
0.10d + 0.25q = 40
Step-by-step explanation:
We are given a situation where Alexis has some dimes and quarters, all her coins have a value of $5.80 / and have a total of 40 coins.
So lets look at the equation for 40 coins.
We are looking for how many dimes and quarters equal to $5.80 and make up 40 in total
Therefore :
We have to add dimes and quarters together to make up $5.80 dollars
d + q = 5.80
This makes B. Incorrect because it has d + q = 40 instead of d + q = 5.80
Now for the amount of coins in total.
We have to find the amount of each coin costs. So a quarter is 25 cents, and a dime is 10 cents. So we add those together to make up 40 coins in total.
0.10d + 0.25q = 40
A. becomes incorrect because is has 40d + 40q = 5.80, which already goes over the amount asked and does not have the correct system of equation.
Therefore leaving you with C.
