Ahot air balloon descended 99.6 m in 12 seconds what was the balloons average rate of descent in meters per second

Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit

Do you mind if you guys me with this question i’m on number 8

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air