exam Maths Puzzle Numerical Ability

Which of the following exponential functions best describes the table below?
x: -0.1, 0 , 0.1 , 0.2
y: 6, 3, 1.5, 0.75
a) y=6(1/2)^10x
b) y=3(1/2)^x/10
c) y=3(1/2)^10x
d) y=3

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exam Other Question

2 students have 210 $altogether. If the first one gives 1/6 of his sum of money to the second one ,the second one will have 1/2 of the sum the remains to the firdt one . What some One-third of the sum of two consecutive integers is 6 less than the smaller integer. Find the integers.