What is the value of cosine (StartFraction 4 pi Over 3 EndFraction)? cos(4pi/3) A. -square root 3/2
B. -1/2
C. 1/2
D. square root 3/2

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

How many solutions does the nonlinear system of equations graphed below have?

Which is f(5) for the function –2x2 + 2x - 3?