exam Maths Puzzle Numerical Ability

I NEED HELP! This problem is not coming out right. Here it goes...

Given the function k describe by k(x)=10x find each of the following:
(a) k(-17)
(b) k(8)
(c) k(34)

the answer k(-17) = ?????

PLEASE.....PLEASE....

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exam Other Question
The formula for volume of a solid rectangular figure is V=lwh (length x width x height). If the volume of a mailing container must be 360 in^3, its length 12 in. and width 6 in., what must its height be? A= [ 1 -8 B= [ 10 8 -1
-4 4 ] 9 10 1 ]

Find A+B, if possible