Answer:
13
Step-by-step explanation:
Given
x² - 14 ← substitute x = 9 into the expression
= × 9² - 14
= × 81 - 14
= 27 - 14
= 13
The answer is <span>C. five billion, six hundred eight million, nine hundred twelve thousand, thirteen </span>
I think its 10
Correct me if im wrong
But all u have to do is multiply 2.5 x 4=10
Be careful you don't add unlike terms together (e.g. x^2 and x cannot be added or subtracted together).
<span>Be careful you don't mistake the 2 in x^2 as another number. Same for x^3, x^4. etc.</span>
Number of ways of picking a smaller number out of a bigger number is called combination.
Number of way of picking 3 stamps out of 4 is 4C3 (4 combination 3) = 4! / (3! x (4 - 3)!) = 4! / (3! x 1!) = (4 x 3 x 2 x 1) / (3 x 2 x 1 x 1) = 24 / 6 = 4 ways.
