The step function f(x) is graphed. What is the value of f(-1)?
4
-1

O
3
2
1
4 3 2 1
3
4
5
6
x
2
-2
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Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

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

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two