Can you run the answers plzzz ill give extra points because of your work and me this stressful plzzz

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

X+ y = 5 ; x - y =3 solve using linear combination