A function is given by f (x) = 4x2 + x . Find
a) f (?4) .
(b) f (x ? 2)
(a) 60
(b) 4x2 ?15x +14
Mathematics
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Evaluate the expression.xy - x2 when x = - 
and y = 
A. 
B. - 
C. - 
D. -
Mathematics
Solve the problem.If n(A) = 40, n(B) = 117 and n(A ? B) = 137, what do you know about n(A ? B)?
A. n(A ? B) = 20 B. 60 C. n(A ? B) = 10 D. n(A ? B) = 22
Mathematics
Solve the problem.The sun radiates energy into space at the rate of 3.9 × 1026 joules per second. How many joules are emitted in three weeks?
A. 7.07616 × 1059 joules B. 7.07616 × 1026 joules C. 7.07616 × 1032 joules D. 7.07616 × 1053 joules
Mathematics
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 
Mathematics