Four student tickets and two normal tickets total $200. If student tickets are half the price of normal tickets, how much does each type of ticket cost?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)