Answer:
9. 
10. 
Step-by-step explanation:
9. 
Evaluate when x = 10.
Substitute x = 10 into the expression

Apply the negative exponent rule (
)
Thus:

10. 
Evaluate when a = 6 and b = 3
Substitute

Apply the negative exponent rule




Answer:184
Step-by-step explanation:
The answer is 2%
38.21 - 37.48 =0.73
0.73 / 38.21 = 0.01910
0.01910 x 100= 1.91 percent
To the nearest whole percent will be 2 percentage