Suppose that height of community college students is a normally distributed random variable with a mean of 66 inches and a standard deviation of 5 inches. Calculate the Z-score for a student whose height is 70 inches. Just stating an answer is not enough – you need to show how you are calculating the Z-score.

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The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.