Can someone plz help me with 2,3 and 4? i get the rest just not those three

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

Savannah had 40 iris blooms last year this year she had 15% more iris blooms how many more hours blooms did savannah have this year