Solve the problem. Round your answer to the nearest whole number, if necessary.The function f(t) = -0.2t2 + 8t approximates the average number of digits that participants in a memorization experiment were able to recall after t minutes. Find the number of digits recalled after 8 minutes.
A. 31 digits
B. 71 digits
C. 51 digits
D. 91 digits
Answer: C
Mathematics
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Find the directional derivative of the function f(x,y) =  figures 4.png)
at the point p(7, 0) in the direction of the unit vector that makes the angle  figure.png)
with the positive x-axis.
 multiple choice.png)
Mathematics
Find the second derivative of the function.s = 
A. 
= 5t3 - 
- 
B. 
= 5t4 - 
- 
C. 
= 20t5 + 
+ 
D. 
= 20t3 + 
+ 
Mathematics
Write the fractions as decimal numbers.
A. 0.005 B. 0.05 C. 0.0005 D. 0.5
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics