exam Maths Puzzle Numerical Ability

How do you graph linear inequalities with 2 variables?

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exam Other Question

Hi Can I have some help evaluating this function?

Use the function to evaluate the indicated expressions and simplify.
f(x) = -2x^2 + 7

f(x + 2) =
f(x) + f(2) = survival information of patient who has an operation of a type of cancer:
Patient survial: 0-1 year 80%, 1-2 year 87.5%, 2-3 90%, 3-4y 90%
For a pt who has survived 1 year, what