Write a numerical expression, then solve the problem. A pack of 12 pencils costs $3 while the cost of 12 pens is $5. Write a numerical expression of the total cost of buying 4 packs of pencils and 4 packs of pens.
4*3+4*5
Total: $32
Insert parentheses to make this expression true 1 + 2 * 2 - 5 = 0
1 + (2 * 2) - 5 = 0
Solve the problem, then explain how you got your answer. Nancy runs a dog obedience school. There are a total of 58 dogs enrolled in the school. There are 22 dogs in obedience class. Out of the remaining dogs, there are equal amounts of dogs in competition as there are in the fancy tricks class. How many dogs are in each class?
22 in obedience, 18 in competition, 18 in fancy tricks.