exam Maths Puzzle Numerical Ability

Suppose Petra could not find her credit card bill and did not remember the amount of her bill. Could you still determine the cost of the items? Why or why not?

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exam Other Question

If A is a point on the line with equation y= x-1 and 2squarerootsof2 units from B (-4,1) find the coordinates of A. Is this function always increasing, decreasing, or remaining constant?

y=0(-x+1)

a. always increasing
b. always decreasing
c. always constant
d. there is no way to know