exam Maths Puzzle Numerical Ability

What is the value of f(-3) for the function f(x)=4.7x+1.6?

A. -18.3 B. -15.7 C. -12.5 D. 15.7

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exam Other Question

the quadrilateral with vertices P(6,3), Q(2,-2), R(1,7) and S(x,y) is a parallelogram. Find (x,y) algebraically. find the value of {4+5}x{6-3}