Choose the best definition for the following phrase: like terms
a) a letter that holds the place for some unknown value in mathematics.
b) a process where you must look for terms that have identical variable parts and then combine their coefficients.
c) a process where if two things are equal, one can be put in the place of the other and nothing will change.
d) terms that have identical variable parts.

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.