Take a look at the pics and help me

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?

Find an equation of variation where y varies directly as x and y 75 when x5, findy when x is 1

Find the sale price to the nearest cent. $4.30 makeup; 40% discount; 6% tax