The answer is 840 because you just have to add $500 and $10 and $300 and $30 and that is what you get .
Hope this helps!
First, simplify the first two terms: 3sqrt(x) - 2sqrt(x). This reduces to sqrt(x).
Next, add 4sqrt(x) to this 1sqrt(x); the sum and answer to this question is 5sqrt(x).
The first tile goes to 4p3q2
The second tile goes to 8pq5
The third tile goes to 4p2q5
The fourth tile goes to 8p2q
Right triangle 45 45 90
so b = 2√2
and
a^2 = (2√2)^2 + (2√2)^2
a^2 = 8 + 8
a^2 = 16
a = 4
