Tanya paid $75 to join a summer gold program. the course where she plays charges $30 per round. since she is a student, she receives a $10 discount per round. if tanya spent $375, how many rounds of gold did tanya play?

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Needmax 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.

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?