T-shirts are 3 for $18. Tia bought 4 T-shirts. How much did she spend?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

17 in long 1.3 ft wide and 8in high what is the volume

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.