Which symbol makes the number sentence true 8+2=20 ? 2

Can someone with this one pre-calc question? the finishing time for a runner completing the 200-meter dash is affected by the tail-wind speed, s. the change, t, in a runner's performance is modeled by the function shown below: t= 0.0119s^2 - 0.308s - 0.0003 predict the change in a runner's finishing time with a wind speed of 3 meters/second. note: a negative answer means the runner finishes with a lower time. round to the nearest hundredth.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14