exam Maths Puzzle Numerical Ability

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

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exam Other Question

The sum of the measures of the angles of a triangle is 180*. Find the measure missing. Angles given are 45 and 35 degrees. Is the correct angle 100???? Which best describes the effect on the graph of f(x)=4x+8 if the y-intercept is changed to-3?