What is the most logical first step in solving the equation x2 +6x+9 = 10 ?
2 answers:
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Let 
be the common difference between terms in the sequence 
. Then
The first term in the sequence,
, satisfies
...
So the explicit formula for the
-th term in the sequence is
The first term in the sequence,
...
So the explicit formula for the
Answer:
Option (B).
Step-by-step explanation:
Percentage change between two numbers a and b can be calculated by the formula,
% change =
Where, (b - a) = Change in values
a = Initial value
If a = 16 and b = 20
Percentage change between 16 and 20 will be,
=
=
= 25%
If a = 20 and b = 16,
Percentage change =
= 20%
Therefore, %change between 16 and 24 may be 16% or 20%.
Option (A),
= 25%
Option (B),
= 1.25 - 1 × 100
= 1.25 - 100
= -98.75%
Option (C),
= 25%
Option (D),
= 20%
Therefore, we can not use the calculation used in Option (B).