a
0
=
4
a
i
=
a
i
−
1
+
7
XXXX
possibly with the restriction 1<=i<=4 if this is not intended to be a continuous sequence
Explanation:
This is a simple arithmetic sequence with a difference of
7
between ascending sequence terms.
We know because they are both 7, but 7.031 has 031. 7.03 only has .03, if that makes sense
- -5 is always smaller than -4. So, x might be -4. So, A is an option you should select.
- 2 is greater than -4. So, x might be -4. So, B is an option you should select.
- If we place -4 in x, we get 3(-4)+4, i.e., -12 + 4 = -8. So, 3x + 4 = -8. Therefore, you cannot select C because it cannot be greater than, it should be always equal to.
- 5(-4) = -20, 2(-4) - 3 = -8 -3 = -11. -11 is greater than -20 but they are never equal. So, you cannot select D.
- 4 - 2(-4) = 4 + 8 = 12. 12 is greater than -6. Therefore, you should select E.
<u>Answer</u>
<u>A,</u><u> </u><u>B,</u><u> </u><u>E.</u>
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
A.
Twice the sum of a number and three means that the number and three are in parentheses.
