A dozen pens cost $96. How much money is needed to buy 21 of the
same pens?​

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Could somebody me with this radical simplification?