What is the simple interest earned on $7550 at a 3.9% interest rate for 6 years? round your answer to the nearest cent.

simple interest
i = p • r • t

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 of the following of the following sets of side lengths could not form a triangle?

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?