What is the focus point of a parabola with this equation? y=1/8(x^2-4x-12)
A. -2,0
B. -2,-4
C. 2,-2
D. 2,0
E. 2,4

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

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