If (3) x+y = 81 and (81) x-y = 3 find the values of x and y.

The mathematical model C=500x+70000 represents the cost in dollars a company has in manufacturing x items during a month. How many items were produced if costs reached 320000?

If Juan played the lottery last week and didn't win, what is the probability that he will win this week?

The difference of two numbers, a and b, is 21. The difference of 5 times a and b two times b is 18

How many sandwiches can I make using one one meat one topping

How divide 27 in 624

Find all real zeros of the function y = - 3x+9

Factor the following expression using the GCF 10dr-60r

What is the value of the expression 8m-2 when m=4?

16. Unemployment is the ratio of A. unemployed workers to employed workers B. unemployed workers to total workers C. workers to total population D. workers to nonworkers

Lia has a dog and a cat. Together, the pets weigh 24 pounds. The dog weighs 3 times as much as the cat. How much does each pet weigh?