Brian decided to start a dog-walking service. he's going to charge each dog owner $4.50 to walk one dog and $6.75 to walk two dogs. approximately how much will he earn if he walks 13 single dogs and 9 sets of two dogs?

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Astore sells 4 apples for $3 and 3 oranges for $4 if pete buys 12 apples and 12 oranges how much will it cost

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.