Answer:
1. 15 (A)
2. 12 (G)
Explanation:
1. We can make an equation out of this...
 3x+3=48
 x is the age of Geoff which is what we are trying to find out
 
 We have to add 3 to both sides of the equation
 3x+3=48
 -3 -3
 ________
 we end up with 3x=45
 we then have to divide 3 by both sides because its the opposite of 
  multipling
 3x=45
 _____
 3
 we get x=15
2. We can write a problem statement 
  (2 x 9)-6=?
 multiply 2 and 9 FIRST
 
 18-6=?
 your answer is 12
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