What is the value of z in the equation 3x + 5 = 4z - 8

Suppose a cafeteria has 4 different sandwiches and 6 different drinks. If you select one sandwhich and one drink, how many different lunches can you choose?

One day a store sold 21 sweatshirts. White ones cost $11.95 and yellow ones cost $11.50. In all, $245.55 worth of sweatshirts were sold. How many of each color were sold?

Why can a variable be used to represent a number

What is the absolute value of square root of - 15

What is the expression 1/3b-1/3 factored?

Jose worked n hours at $8.75 per hour. He made a total of $61.25. Write an expression that represents the total number of hours Jose worked

Which of the following is the correct translation for the expression x - 6? a number subtracted from 6 a negative number added to 6 the product of a number and - 6 the difference between a number and 6

F (x) = 4x2 - 24x + 20?

My question: Tia's car needs repairs. Honest Harry will charge $70 per hour plus $130 for the part. Lucky Lou will charge $80 per hour plus $40 for the part. How long is the job if the two costs are the same?

Sarah used 2.5 cups of cheese in a dish that serves 10 people. Amyn used 1.6 cups of cheese in a dish that serves 8 people. How much more cheese is in one serving of Sarah's dish?