Answer:
9.8 X 10^-07
Step-by-step explanation:
When you have a number like that then you move the decimal how many time you can to the right so it can be a single digit and remember this when you have scientific notation then the number cant go past 10 and it cant go below 0.
Answer: 6 trombones
Step-by-step explanation:
We can set up a proportion.
Let x be the number of trombones there are.

We can cross multiply:
4*9 = 6x
6x = 36
Divide both sides by 6:
x = 6
2x+2 would be the expression