30.25. Thirty is the whole number, therefore it goes before the decimal. The 25 hundredths come after the decimal. The first Slot after the decimal is the tenths. And the second is the hundredths. .25 is twenty five hundredths.
The answer is

because you subtract exponents
Correct answer is C CCCCCC
Answer: D) 16
Step-by-step explanation:
If l is perpendicular to m, then 37+3x+5=90.
Combine like terms
42+3x=90
3x=48
x=16