What is the value of the expression when y = 2?

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

Explain why the factor 1.5 is broke. into two numbers in the model.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)