Angelo bought apples and bananas at the fruit salad. he bought 20 pieces of fruit and spent $11.50. apples cost $0.50 and bananas cost $0.75 each. write a system of equations to model the problem. (hint: one equation will represent the number of pieces of fruit. a second equation will represent the money spent on the fruit.)

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?