Answer:
x = 49.84
Step-by-step explanation:
We are given an equation of unknown x and we have to solve the equation for x.

⇒ 
⇒
{Since we know that ln AB =ln A + ln B}
⇒ 
⇒
{Since we know that ln A/B = ln A - ln B}
⇒ 
⇒ 
⇒
{Converting logarithm to exponent form}
⇒ x = 49.84 (Approximate) (Answer)
F(-x) = 2/-x/ + 3(-x) = 2/x/ - 3x;
The answer is 63, 42*.5= 21 42+21=63
Your answer is 10^(- 4).
Think about how exponents with a base 10 work. 10^1 = 10, 10^2 = 100, 10^3 = 1000. It's just add a zero to the right side as you go up.
Then think about 10^0. Anything to a zero power is 1. Only way to go is into negative exponents now. If for positive exponents on 10 we add a zero to the right side, then for negative exponents we add them to the left. Only difference is we have a decimal.
10^(- 1) = 0.1
10^(- 2) = 0.01
10^(- 3) = 0.001
And then your answer
10^(- 4) = 0.0001
Hopefully that explanation makes sense. Exponents can be rough to explain when you're not face-to-face or using some sort of live animation to talk through it. If you're still confused, I'd suggest talking to your instructor.