Answer:
(2x+5)(x+4)
Step-by-step explanation:
After factoring we can find that it equals
(2x+5)(x+4)
2.75+5*1.65=11 kg weight of the box with laptops.
p=40+(11-5)*3.15=58.9
The cost to ship the packed box is $58.9
Answer:
There will be
billion messages sent or received in November.
Step-by-step explanation:
Given.
Number of text messages sent or received
billion.
Increment on the very next month 
Lets find what is 
⇒
⇒
So we will add this value to our previous months data.
Now
Number of text messages sent in the month of November
billion.
Rounding to the nearest tenth the answer will be
billion.
So
billion text messages were sent or received in November.
Hi, this is the notation for inclusion of all real
numbers.

We can also state numbers which are positive or negative with a sign on top of the R notation like so: