The slope is 4.
To find the perpendicular slope, you use the negative reciprocal of the slope you already have. Since the original slope is -1/4, you flip -1/4 to get -4. You then find the negative of -4 to get 4
Step-by-step explanation:
Area of Circle =

Maximum value is found by solving the root of the first derivative. that root is where the maximum value is.
f ' (x) = -8(x - 6) = 0.
So x = 6 and that's the maximum value. f(6) = 3
2cos(2x - π) + 4 is a trig function. The maximum value of cosine function is 1.
So the maximum value would be 2(1) + 4 = 6.
The answer is D,
a(n) = 4/5 + 1/6(n- 1)
just took the test :)