The cost of a math book is $25 more than twice the cost of an English book. The total cost of the two books is $85. Find the cost of the math book.

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Which of the following is not a subset of {1,2,3}?