What is

21x+7y=42 in

in y=mx+b form

What is the value of m in the equation one-half m minus three-fourths n equals 16, when n equals 8?

Recipe A calls for 2 cups of sugar and makes 48 cookies. Recipe B calls for 3 cups of sugar and makes 54 of the same-sized cookies. Determine which recipe contains more sugar in each cookie. Use complete sentences to explain your reasoning.

Jenny wants to multiply out the brackets in the expression 3 (2a+1) she writes 3 (2a+1) = 6a+1 show why jenny is wrong

Which algebraic expression represents the statement: the difference of four times a number and seven. 4n - 7 4n + 7 n + 7 n - 7

Ms. Chloe has 5 cups of popcorn, which she is serving as a snack to a group of children. Each serving is 1/4 of a cup. How many children can get a serving of popcorn as a snack?

Mr. Barclay sold goods for $21 and lost a percent equal to the number of dollars he paid for the goods. How much did the goods cost him?

Felipe is saving money to buy a game. So far he has saved $30, which is five-sixths of the total cost of the game. How much does the game cost?

A cabin has room for seven campers and two counselors. How many cabins are needed for a total of 49 campers and 14 counselors?

Solve for x and check your solution 4x+3=x

Simplify the following expression 3x^4y^2/xy^2