I need only answer

Q1

dx Assume that x = x(t) and y = y(t). Let y= x +7 and -=3 when x = 5. dt dy Find dt when x = 5. dy dt (Simplify your answer.)dy dx Given y = 3x~ + 5x, find when x = - 1 and =4. dt dt dy dt (Simplify your answer.)