Use an equation to solve the problem.

the sum of a number and 6 times that number is 42. what is the number?

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?