Answer:
It’s c
Step-by-step explanation:
Alrighty, so 280.05 rounded to the nearest integer is 280. 280.05 rounded to tenths is 280.1. add those two together and you get 560.1.
1. 6.73 x 10^6
2. 1.33 x 10^4
3.9.77 x 10^22
4. 3.84 x 10^5
The rest i didn’t understand what where you trying to say
Answer:

Step-by-step explanation:
b increased by 16 is at most 20 in equation form
increased means add
b+16
is at most means 

Answer:
It equals n=72
Step-by-step explanation:
7/8 n=63
7/8 n=63
7n/8=63
8. 7n/8=8. 63
7n=504
7n/7=504/7
n=72