Whats the answer, math exam plz

How many verticies does a triangular prims have

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip