I believe it is 8x.
Use the formula A=1/2(b*h)
A=1/2(4x(5x-1))
A=1/2(20x-4x)
A=1/2(16x)
A=8x
Equation: 2(.25) + p(.75) = 2.75
Answer: 3 pencils
[1], [3] => a = 49,000/2 = 24,500 => b +c = 24,500 => c = 24,500 - b;
[2] => 25*24,500 + 20b + 15c = 1,052,000 => 20b + 15c = 1,027,500;
20b + 15*(24,500 - b) = 1,027,500 => 5b = 733,500 => b = 146,700 =>
c = - 122,200;
Answer:
9
Step-by-step explanation:
The vertex of <span>y = 7x2 + 14x + 4</span> is at
(-1,-3) (see attachment)
