exam Maths Puzzle Numerical Ability

6-g(g-7)6-8g

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exam Other Question

What do you set the equation equal to when you are looking for the measure of an angle in a circle? example: what would the angle equal if the equation was: 15x+3 would I set it equal to 360 or what or what if the equation were just 4x If f(x)=x^2-6x+8, what is the value of f(7)-f(3)?

a. -1
b. 0
c. 14
d. 15
e. 16