First let's rewrite it...
18a^2 + 20a + 8
Factor out a 2
2 (9a^2 + 10a + 4)
Three plus the product of four times twelve
225=50+25x
175=25x
7=x
Answer: They can rent the boat for up to 7hrs
Hope this helps:)
Answer:
the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.