Based on your work in Question 1 through 3, what is the relationship between the radius, , and the tangent line, ? What can you conclude about any tangent line to a circle and the radius of the circle? Explain.

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Solve the system of equations. y= 2x y= x^2 - 15

What is the value of x in the equation 2(x-4) = 4(2x + 1)?