What is 221,000,000,000,000,000,000 expressed in scientific notation

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

Sara can take no more than 22 pounds of luggage on a trip.her suitcase weighs 112 ounces.how many more pounds can she pack without going over the limit?