4 just count how many are there that are between 19-21
X + (2 10)/(30 x)
The gcd of 10 and 30 is 10, so 10/30 = (10×1)/(10×3) = 10/10×1/3 = 1/3:
x + 2/(3 x)
Put each term in x + 2/(x 3) over the common denominator 3 x: x + 2/(x 3) = (3 x^2)/(3 x) + 2/(3 x):
(3 x^2)/(3 x) + 2/(3 x)
(3 x^2)/(3 x) + 2/(3 x) = (3 x^2 + 2)/(3 x):
Answer: (3 x^2 + 2)/(3 x)
Answer:

Step-by-step explanation:
To find which systems of equation represents the situation, we can break down the key information and create two variables:
<u>Variables:</u>
Let
= number of sundaes sold.
Let
= number of banana splits sold.
<u>Given information:</u>
Sundae: 
Banana Splits: 
8 more sundaes sold than banana splits. This can be expressed by
.
Total sold was
. This can be expressed as
.
∴ The systems of equation that expresses this situation are
and
.
Hope this helps :)