Please help me 8TH grade math now

Which of the following graphs represents the function f(x) = 2^x

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year