Mr. Sanders bought pencils and dry erase markers to use in his classroom for the school year. A box of 12 pencils costs $4, and a box of 6 dry erase markers costs $10. Which of the following equations can be used to calculate the cost of x boxes of pencils?
A. y = 4x
B. y = 10x
cy=6x
OD. y = 12x

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?