Posted by Nina on .
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,
For the first problem don't you replace all the x with 5 and solve?

Algebra 2 
bobpursley,
A(5)=5^2+5*5 + 6
On the second part,
1/2 b*h=answer in first part, solve for b.