She spent 20 dollars on each book because if you subtract 18 from 198 you'll get 180 then you divide that by 9 n it leaves you with 20.
Check the picture below.
make sure your calculator is in Degree mode.
Answer: 5
Step-by-step explanation:
1. You have the following expression given in the problem above:

2. You can estimate the result by rounding the numerator and the denominator.
3. As you can see, you can round up 97.5 to 100.
4. Then, you can round up 1.96 to 2.
5. Therefore, you have:

6. Therefore, the result is 5.
Answer:
-3, 2
Step-by-step explanation:
Answer:
45158
Step-by-step explanation:
Since the colony grows at a rate of 12%, after 2 years there will be
bacteria. Since you probably can't have part of a bacteria, you round to 45158.