Answer:
A=150
Step-by-step explanation:
1/2ab=A
1/2 15x20 = 1/2 300 = 150 = A
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Evaluate them
A.
f(5), x>1 so square it, f(5)=25
A is wrong
B.f(2), x>1 so square it, f(5)=4
B is correct
C. f(1), x=1 so the result is 5, f(1)=5
C is correct
D. f(-2), x<1 so double it, f(-2)=-4
D is wrong
answers are B and C
Answer:

Step-by-step explanation:
From the question we are told that:
Function

Generally 1st derivative f'(x) of Fuction f(x) is


Generally 2nd derivative f''(x) of Fuction f(x) is
Where

Therefore



Your answer of 20% of 60 is 12