13. two seventh-grade classes are selling raffle
tickets to raise money. one class is selling tickets
for $3.50 each and has already raised $450. the
other class is selling tickets for $4.00 each and has
already raised $375. write an equation that can be
used to find t, the number of tickets each class
needs to sell so that the total amount raised is the
same for both classes.

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?