Math Problem Set 4

  1. ACT score varies directly with GPA. What does that mean? It means that they increase together. A student with a GPA of 2.04 has an ACT score of 19. What is the ACT score of a student with a GPA of 2.1??
  2. F(m)=2m²-10m. If F(6b)=18b, find all values if b
  3. x∆y=3x-2y+xyz If 4∆5=100, find the value of 8∆10
  4. Sales is a function of price such that: S(p)=4p²-80+c When the sales is $60,000 price is 10. Find the sales when the price is 20.
  5. Use the chart below to answer the following questions.

chart

 

 

 

  • Find G(2)•F(-2)
  • G(m+3)=0 Find F(2m)
  • G(r)x F(r)=0 Find all values for r
  • F(y+1)=-1 Find G (y-1)