Answer: C, It stays the same.
Step-by-step explanation: If you simplify the ratio (the fraction) by canceling the t's, you get 2/1 or 2:1. This means that no matter the value of the variable t, the value of the expression will stay the same.
Solution:

1. For Best Actor
= 59 years

Z, Score for best actor named, 

Z-Score for best actor = 1.24
2. Z , Score for best supporting actor , called 
=49 years

Z-Score for best supporting actor = 0.70
Z-Score is usually , the number of standard deviations from the mean a point in the data set is.
3. As, 
So, we can say that,Option (B) The Best Actor was more than 1 standard deviation above is not unusual.
4.As, 
So, we can say that,Option(A) The Best Supporting Actor was less than 1 standard deviation below, is not unusual.
a x a x c = 3.9 * 3.9 * 3 =45.6345.63 * 2 = 91.26a x b x c = 3.9 * 5.7 * 3 = 66.6966.69 + 91.26 = 157.95 cubic units
Kate's model is correct because 10 times the value of 4 rods, 10(4(10)), is 400. Mel's model represents 4(1)=4, which is incorrect. Kate's model represents 4*100=400, which is correct.
Hope I answered your question!
19 is a prime number so 1, 19
hope this helps!