95% of the question coretly on a 40-question test. how you answer many question you answer incorrectly?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

When only separate discreet points are graphed it is called?

The quadratic function h(t)=-16.1t^2+150 choose the graph representation