Which two answers indicate why it's important to round numbers?

-sometimes it in estimating an answer.
-calculations may lead to long decimals, but money is in dollars and cents.
-looks neater
-long division with decimals is not possible.

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3