1. No.
2. No.
3. Yes.
4. No.
Subtract 6 from both sides, you get 1/3x=-14
Now multiply both sides by there, hence x=-42
15 tablespoons of sugar is needed for 10 people
X axis (-40,0)
y axis (0,15)
16000x9%x5 is $7200 #1 is $7200
16000x9%x3 is $2400 soo 7200-2400 is 4800 sooo
#1 is $7200
#2 is he or she will save $4800