Andre wants to find the distance d across a river. He located parts as shown in the figure and then used similar triangles to find that d equals 220.5 feet. b) tell what you think he did wrong and correct his error

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)

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)