Tutor profile: Fay H.
A drawer contains 5 red crayons and 3 green crayons. What is the probability that you select two red crayons if you reach in the drawer and randomly grab two crayons without replacement?
Compute the number of different ways that 7 Pennies and 3 Dimes balls can be placed in a row.
10!/(7!3!)= (10*9*8)/(3*2*1) =120
For the function f(x)= 3x +2, find x such that f (x)= 14
Given that f(x) = 14, we substitute 14 in to the equation in place of f(x) 14 = 3x + 2 Subtract two from both sides of the equation 12 = 3x Divide both sides of the equation by three. 4 = x Answer: 4
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