Can someone do 4, 5, 7 and 8 im failing math and avoiding a whooping

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers