I don't understand my homework.. I have tried but failed at understanding pls help!

6. DETERMINE THE EQUATION OF A CURVE OF GOOD FIT FOR THE SCATTERED PLOT SHOWN. LEAVE ANSWER IN STANDARD FORM, 410 (0,4 ) - 4 7. THE PATH OF A DOLPHIN JUMP OUT OF THE WATER IS MODELLED BY h(d ) = - . 2d' + ad, WHERE had) Is THE HEIGHT OF THE DOLPHIN ABOVE THE WATER AND d' Is THE HORIZONTAL DISTANCE COVERED FROM THE TIME IT COMES OUT OF THE WATER SURFACE. a) AFTER HOW MANY METERS DOES THE DOLPHIN HIT THE WATER. SHOW. 3 b) WHEN WILL THE DOLPHIN REACH A HEIGHT OF 1.8 M. . SHOW (3 C ) CAN THE DOLPHIN'S JUMP LENGTH BE 1/ M. ! EXPLAIN 2. d) WHAT IS THE DOLPHIN'S MAX. HEIGHT ! SHOW