Amelia and Brendon are both on the ground looking at The top of a tower point D. Amelia is at point A and Brendan is at point B. What is the approximate angle of elevation in Brendan looks up at the tower explain your reasoning.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?

:)i need to know on which ones are corresponding, alternate interior, alternate exterior, or none of these.