At-shirt makes wants to open his first store. if he chooses the store on main street, he will pay $640 in rent and will charge $30 per t-shirt. if he chooses the store on broad street, he will pay $450 in rent and will charge $25 per t-shirt. how many t-shirts would he have to sell in 1 month to make the same profit at either location?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

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.