Answer:
see below
Explanation:
3.) How much money would you earn in three months (assume 4 weeks in each month) at each of the jobs you listed in #2 
if you worked 6 hours per day for 5 days each week? 
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 1. dog walking: 
6 hr/day (5 day) x (4 weeks x 3 months) x $30/hour 
 $10,800 in 3 months 
 
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2. private swim instructor 
6 hr/day (5 day) x (4 weeks x 3 months) x $20/hour 
 $7,200 in 3 months 
 
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 3. sandwich maker 
 6 hr/day (5 day) x (4 weeks x 3 months) x $16.75/hour 
$6,030 in 3 months