Please help me! I dont know what its asking me to do

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

Select the lengths in centimeters that would form a right triangle

What is the equivalent fraction for the following fraction using 5 as the multiplier? 1/2