Which of these expressions can be used to calculate the monthly payment for a 30-year loan for $190,000 at 11.4% interest, compounded monthly?
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There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Which graph represents the linear function below? y-3=1/2(x+2)

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.