Prove that 1/((3- √8 )) - 1/( (√8-√7))+ 1/((√7-√6 )) -1/((√6-√5))+ 1/((√5-2 )) = 5 please help me ;-;

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

1: 4 if the wew 35 surfboards at the beach how many were short boards?