Hello.
First of all, let the number be t.
8 times t can be written like this:

Notice that the number is before the variable and the times sign (×) is not there.
We can write it as 8×t, but we usually write it as 8t.
The sum of means we add:
8t+21
Now, "less than" is "<" :

Therefore, the answer is

I hope it helps.
Have a nice day.

It equals 45 degrees because if you have a ~ line it means you have 45 degrees and don't forget to thank me
Answer:
yes
Step-by-step explanation:
A parallelogram is a quadrilateral is whose angles are all right angles
Answer:
4 hours and a half. 4 hours and 30 minutes
Step-by-step explanation:
Answer:
a) 47 people (count each leaf)
b) 66 - 1 = 65 (max - min)
c) 4 (occurs the most)