At the end of each week, mr. barton gathers loose change from his car and his pockets and puts it in a piggy bank. the matrices represent the number of pennies, nickels, dimes, and quarters he puts in the piggy bank at the end of two weeks. find the matrix that represents the total number of each coin mr. barton has saved in the two-week period.

Which will form a composite function?

10x − 5y + 14 = 0 whats the answer pls

Julius went on a volunteer trip to centralamerica and took medical supplies with him.he packed a bag with 50 pounds of supplies.he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?