Let f(x)=x+3 and g(x)=1/x. the graph of (f*g)(x) is shown below.

For this case we have the following functions:
  When composing the functions we have:
 
 Substituting values we have:
 
 Rewriting:
 
 The function has a horizontal asymptote at y = 3.
 Therefore, the range of the function is all reals minus y = 3.
 
 option 3

100= 10+ 16t

Step-by-step explanation:

If beginning at 10 percent you initially are only in need for 90% charge. Earning 16% every thirty minutes you can initially do x4 for two hours on the charger and know you aren't at 100 yet. (16x4)+10= 64+10= 74. 100-74= 26. You need one more hour (total of 6 half hours) on the charger.

Another way of doing it could be 16÷90 and getting 5.blahblahblah and rounding up.