Which expression is equivalent to √-80

a. - 4 √5

b. - 4 √5i

c. 4 √5i

d. 4 √5

How many gallons of paint will you need to paint a bedroom that is 10 ft by 14 ft with walls that are 7 1/2 ft high? The walls will need two coats to cover the old paint.

Cost of tickets is 90. 7 adult tickets and 12 kids tickets. Kids tickets 2/3 the adult ticket. How much are adult tickets

Rectangular prism with a length, width, and height of 1/5 cm, 2/5 cm, 3/5 and cm, respectively

Which facts are true for the graph of the function below? Check all that apply. f (x) = (2/5) ^x A. The range of F (x) is y > 0. B. The domain of F (x) is x > 0. C. The y-intercept is (0, 1). D. It is increasing. E. It is decreasing. F.

Graph the system of equations below and find the solution. y = 2x y = - x + 6

A student estimates that it would take 3 hours to write a book report, but it actually took her 5 hours. What is the percent error?

Jerry makes 20$ an hour. He spends 30 dollars a day on transportation and food. Write an expression to describe his spending and earnings for the day, where x is the number of hours that Jerry works that day.

Find the percent increase for the given original and new quantities in parts a through c. a. Original quantity: 100 New quantity: 106 b. Original quantity: 10 New quantity: 16 c. Original quantity: 50 New quantity: 56 a.

What is - x^2+12x-32 in standard form?

Simplify the given equation. 5x + 2 (x - 3) = - 2 (x - 1) 7x-3 = - 2x-1 7x - 6 = - 2x + 2 7x-6=-2x-2