Will mark brainliest

What is the quadric regression equation that fits these data

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Can someone me with this? i’m not sure what to put for my equations.