You would travel 73.333334ft per second because 50 miles/hour would make 73.333333repete foot/second.
The number of terms in the expression is 2
The answer is 27:25 but it’s not on your letters
D) 4.5 Standard Deviations Above the Mean
All you have to do is add .2 to 6.6 until you reach 7.5
6.8
7.0
7.2
7.4
Then you only need half of .2 to reach 7.5, so it's 4.5 standard deviations above the mean