How do you write "Twice the the quantity a number and 3."?

2 Answers
Dec 7, 2016

Answer:

#2(n+3)#

Explanation:

a number and 3:

if the number is denoted #n#, then ##'a number and 3'#
-> #'a number +3'#
-> #'n+3'#

to have twice this whole quantity (instead of, for instance, only n being doubled:

put #'n+3'# in brackets
->#(n+3)#

then to double it, put a 2 before the whole expression (n+3)
-> #2(n+3)#

the final expression: #2(n+3)#

Dec 7, 2016

Answer:

2(n + 3) is probably what you are looking for.

Explanation:

Twice the quantity usually means, "get ready for parentheses".
Inside the parentheses, expect a sum when the statement just says "and". So I would write 2(n + 3).