Which equation represents the following word problem: A car is traveling twice as fast as a truck. If their combined speed is 105 miles per hour, find the speed of the car and find the speed of the truck.
Group of answer choices

3s = 105

s + s = 105

s(2s) = 105

s = 105

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?