book Maths Puzzle Numerical Ability

The sum of three consecutive integers is 969. What are the integers?

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book Other Question

If f(x)=2x^2-5x-3, then f(-3)=

A)0
B)30
C)18
D)48

Please show me step by step how this works i have a examine and i'm scared i'll fail cause my teacher didnt teach me how to do ratios rates and frations