Posted by **Nina** on Sunday, February 22, 2009 at 7:02pm.

Are a of a sail. The area in square meters for a triangular sail is given by A(x) = x2 + 5x + 6.

a) Find A (5).

b) If the height of the sail is x +3 meters, then what is the length of the base of the sail?

- Algebra 2 -
**Chopsticks**, Sunday, February 22, 2009 at 7:05pm
For the first problem don't you replace all the x with 5 and solve?

- Algebra 2 -
**bobpursley**, Sunday, February 22, 2009 at 7:06pm
A(5)=5^2+5*5 + 6

On the second part,

1/2 b*h=answer in first part, solve for b.

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