What does the graph tell you about the value of a in this function f(x)=a(x+k)^1/n+c

a. a is greater than zero
b. it is not possible to tell weather a is greater than or less than zero
c. a is less than zero

The price of a visit to the dentist is \$50$50. if the dentist fills any cavities, an additional charge of \$100$100 per cavity gets added to the bill. if the dentist finds nn cavities, what will the cost of the visit be?