What is the value of the expression shown when x = 5?

3(2x + 4) − x

enter your answer in the box. use number(s) only.

How do you multiply a mixed fraction by a regular fraction

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?