(a) * (a+1) = 420
a^2 + a = 420
a^2 + a - 420 = 0
(a+21)(a-20) = 0
a = -21 OR 20
The two integers can be -21 and -20, OR 20 and 21.
Answer:
C. 65
Step-by-step explanation:
The table which shows the results of the survey are attached below.
From the table:
- Total Number of non-social media users = 71
- Number of non-social media user aged 28 and up = 46
Therefore, the probability that a non-social media user is an older student aged 28 and up

The probability that a non-social media user is an older student aged 28 and up is 65%.
<u>The correct option is C.
</u>
I think it’s a heptagon sorry if it’s wrong
24 divided by 56 will give you the answer.
= 0.42
Answer : 42%