Express 31 billion in scientific notation

A zebra eats 28 pounds of grass in a day. How many pounds of grass would 14 zebras eat in a day? A. 2 pounds B. 42 pounds C. 392 pounds D. 492 pounds

And event organizer is reserving rooms for two companywide events. For the quarterly meeting this month she reserved 2 conference rooms and 5 ballrooms which can seat a total of 238 attendees.

What expression is equivalent to the number 28 19/100

Find the anual premium for 25,000 of life insurance at 22.24 per 1,000 dollars how do you solve this

Elysia added - 218 + (-395) and got a sum of - 613. Which best explains whether or not Elysia sum is reasonable?

The mass of the particles that a river can transport is proportional to the fifth power of the speed of the river. A certain river normally flows at a speed of 3 miles per hour.

Find the center of x^2 + 4x + y^2 - 6y = - 4

Prove that 1 + sin^2A + cos^A = 2

Graph The Function. y=5 (1/2) ^x+4

What is the expression in factored form x2+13x+42