Answer:
either parentheses or brackets
Step-by-step explanation:
(x,y) means that the number is not included in interval notation
[x,y] means that the number is included in interval notation
The answer is 32.5%
and if you need it in decimal form, it would be,

Answer:
7:3
Step-by-step explanation:
The number of yellow marbles: the number of blue marbles
Answer:
$19.60
Step-by-step explanation:
Take the amount and multiply by the tax rate to determine the sales tax
tax = 245 * 8%
Change to decimal form
tax =245*.08
= 19.60
Answer:
Afful is 21 and Naomi is 13.
Step-by-step explanation:
Let
represent the age of Afful and
represent the age of Naomi.
The sum of their ages is 34. In other words:

In 5 years time, Afful will be two times the age of Naomi <em>now</em>. In other words:

Solve for the system. Substitute.

Afful is currently 21 and Noami is currently 13.