Solve for x, and round to the nearest tenth

Plz u need help

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

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

Sole the equation 6n + 9 = -3n - 21 - 6 for n