NEED HELP QUICK PLEASE HELPPPP
1) What will the range values be for the function f(g) = 3g - 5 for the domain {-1.5, 2, 4}?  Show your work!
2) Suppose a van gets 22 mi/gal.  The distance traveled D(g) is a function of the gallons used.  The rule D(g) = 22g should be used for all 3 parts.  
Part a: How far did the van travel if it used 10.5 gallons of gas?  SHOW YOUR WORK !  
Part b: How far did the van travel if it used 20 gallons of gas?  SHOW YOUR WORK!