Jim bought 3 hamburgers and 4 orders of french fries for
$10.77 before taxes. ron went to the same restaurant and
bought 4 hamburgers and 2 french fries for $10.86 before
taxes. what is the cost of the hamburger?

What is the number 321,000,000 in scientific notation? also what is the number? ?

With alll of except for the 2 that i did already

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?