Question 1048460
A triangle has a height of 2x and a base of 7 - 4x.


A = (1/2)(7-4x)2x
A= - 4x^2 + 7x = -4(x - 7/8))^2 + 4(49/64) |completing the square
a) what is the maximum area of the triangle? 49/16 
b) what value of x gives the maximum area? 7/8