Functions 1 — Advanced Math

Questions in this quiz (10)

1. If $$f(x)=3x-4$$, what is $$f(5)$$?

   • 11
   • 15
   • 19
   • 20

2. Given $$f(x)=x^2-2x+1$$, find $$f(-3)$$.

   • 4
   • 10
   • 16
   • 19

3. If $$f(x)=2x+7$$, what is $$f(3a-2)$$?

   • $$6a+3$$
   • $$6a+11$$
   • $$6a+5$$
   • $$6a-5$$

4. If $$f(x)=5x-3$$ and $$f(x)=22$$, what is $$x$$?

   • 4
   • 5
   • 6
   • 7

5. The graph of $$f(x)$$ passes through the points $$(1,4)$$ $$(2,7)$$ and $$(3,10)$$. What is $$f(2)$$?

   • $$3$$
   • $$4$$
   • $$7$$
   • $$10$$

6. Let $$f(x)=x+2$$ and $$g(x)=3x$$. What is $$f(g(4))$$?

   • 10
   • 12
   • 14
   • 20

7. If $$f(x)=x-5$$, which expression gives $$f^{-1}(x)$$?

   • $$x+5$$
   • $$x-5$$
   • $$-x+5$$
   • $$5-x$$

8. The cost of printing a poster is modeled by $$C(n)=2n+15$$ where $$n$$ is the number of posters. What does $$C(10)=35$$ mean in this context?

   • It costs $10 to print 35 posters
   • It costs $35 to print 10 posters
   • The fixed cost is $10
   • The total cost increases by $35 per poster

9. If $$f(x)=x^2+1$$ and $$g(x)=2x+3$$, what is $$f(g(2))-g(f(2))$$?

   • $$-2$$
   • $$0$$
   • $$2$$
   • $$37$$

10. From the table below. What is $$f(x)+3$$ when $$x=1$$?

    • $$-2$$
    • $$-1$$
    • $$0$$
    • $$1$$