On a trip you had to change your money from dollars to british pounds. you got 560 pounds for 800 dollars. what is a unit rate that describes the exchange? ?

Solve 2x+y=3 x+y=5 in substitution method

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Find the value of x. round the length to the nearest tenth