Which of the following scenarios could be represented by the expression 10x+5y?
a) the number of kids in a school class if there are 10 girls and 5 boys.
b)the total number of marbles in a jar if there are 5 green and 10 red.
c) the total weight of a box containing x 5-ounces packages of almonds and y 10-ounce package of peanuts.
d)the cost for x adults and y children to go to the movies if adult tickets are $10 and child tickets are $5.