exam Maths Puzzle Numerical Ability

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

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exam Other Question

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

f(x)= (x+3)/x^2+5x+6. Each of the letters D E T E R M I N E D is written on a card. YOu mix the cards thoroughly. What is the probability of selecting an E, then an M? The first card is replaced before selecting the second card.