Cant get wrong

jason is training for a marathon bike ride. his average speed increased from 3 miles per hour to 6 miles per hour in 3 months. find the rate of change in the miles per hour that jason bikes. a) .5 mile per hour per month b) 1 mile per hour per month c) 2 miles per hour per month d) 3 miles per hour per month

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?