exam Maths Puzzle Numerical Ability

Identify the rate of change (slope) and the Y-intercept. X^2+10X+250

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exam Other Question

simplify/solve it reads x-1 over x-3 is equal to 2 over x-3:

x-1 2
--- = ---
x-3 x-3 A course consits of four 100 point exams. A student scores 60 points on the first exam. What average must be obtained on the next three exams to obtain an overall average of 75%?