15*3+4*2=45+8=53
multiply 15 by 3 and 2 by 4 then add the answers!
An equal sign is a symbol in mathematics.
It is to indicate that the given terms are <span>equal.
It is also used to </span>indicate a mathematical <span>equality.
An equal sign looks like ( </span>

) this.
Step-by-step explanation:
450 - 396 = 54
(54/450) * 100% = 12%
Hence the decrease is 12%.
If the pattern continues, so that each term is separated by a distance of 3, then the sequence is given by the recursive rule

From this definition, we can write
in terms of
:




and so on, up to

(notice how the subscript on <em>a</em> and coefficient on 3 add up to <em>n</em>)
or
