exam Maths Puzzle Numerical Ability

Given the function K described by k(x)=x+3, find each of the following:

k(0) =
k(-14) =
k(-10) =
k(17) =
k(y+1) =

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exam Other Question

Hyperbola help needed?

radio towers A and B, 200 kilometers apart, are situated along the coast, with A located due west of B. Simultaneous radio signals are sent from each towe the length of a rectangle is three times its width
theperimeter of the rectangle is56 cm
a find the length and width of the rectangle

b find the area of the rectangle.

how do i do this please