Iam giving out a lot of points

the first pic is question and first answer choice
the second pic is second and third answer choice
last pic is last answer choice

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation

Which graph of a hyperbola represents the equation 16x^2-y^2=16

The curved part of the figure is the semicircle what is the best approximation for the area of this figure