Find the inverse function of y=9x+3

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?