I really need help. I. Don't understand this

6. DETERMINE THEEQUATION OF A CURVE OF GOOD FIT FOR THE SCATTERED PLOT SHOWN. LEAVE ANSWER IN STANDARD FORM 10 (0,9 ) -4 - 2 4 +X 7. THE PATH OF A DOLPHIN JUMP OUT OF THE WATER IS MODELLED BY h(d ) = -2d + ad, u WHERE bid) 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 . b) WHEN WILL THE DOLPHIN REACH A HEIGHT OF 1.8 M.. SHOW 3 C ) CAN THE DOLPHIN'S JUMP LENGTH BE 11 M. ! EXPLAIN d) WHAT IS THE DOLPHIN'S MAX. HEIGHT! SHOW