Normally, a balloon like mine is fueled using 2 tanks that each
hold 10 gallons of gas. however, i do not have such big tanks.
my tanks can only hold 3/7 of that amount. how many tanks
do i need to fill in order to get the required 20 gallons of gas?

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Me 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.

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)