exam Maths Puzzle Numerical Ability

Determine the values of x for any holes in the graph of:

f(x)= (x+3)/x^2+5x+6.

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exam Other Question

Solve the equation (if possible) and check your soltuion.

4(x+3)-3=2(4-3x)-4 when a baseball player practiced batting for 350 hours his RBI went from .235 to .250.
a. what is the rate of change?

b. if this rate stays constant how many hours must he prac