Y+3x=5/2 is it perpendicular parallel or neither

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.)

If i had 1234 apples and 1 banana what is the total amount

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.