A watch company is developing packaging for its new watch. The designer uses octagons with a base area of 30 in2 and rectangles with a length of 10 in to create a prototype for the new package. What is the volume of the prototype?

140 in^3
200 in^3
240 in^3
300 in^3

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

During how many months was the difference between the number of days with homework and with no homework greater than 6?