Find the roots of the function.

ƒ (x) = x^2 + 81

x = - 81i, 81i

x = - 81, 81

x = - 9, 9

x = - 9i, 9i

A local dairy farmer collects 490 gallons of milk from his cows. He keeps 1/35 of the milk for his own use, and sells the rest. Each quart of milk sells for 35 cents. In dollars, how much does he earn from selling his milk each day?

There are 1800 students in a school, and 540 of them do not take part in sports activities. Of these students who do not take part, 5/9 are girls. There are 2/3 as many girls as boys in the school. How many boys take part in sports activities?

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How many times could 6 go into 49

The ratio of white pens to green pens is 2 to 8. how many green pens are there if there are 18 white pens?

A manufacturing machine has a 7% defect rate. if 5 items are chosen at random, what is the probability that at least one will have a defect? mhf

F (x) = 2x - 2 Find f (3)

Albertson's found that the demand for Coke products varies inversely as the price of the product. When the price of a Coke product is $2.75, the weekly demand is 1250. Find the weekly demand if the price is raised to $4.00.

What is 4 pints into quarts

5/8 of a number is 40. What is the number?