Answer:
2
Step-by-step explanation:
15-4(x - 3)=5x+9
15-4x+12=5x+9
collect the like terms
27-9=5x+4x
18=9x
divide both sides by 9
x=2
Umm, That's A lot Of Homework...
Answer:
Mean = sum of all observed values / sum of frequency
Mean= (1*2 +2*2 + 3*2 + 4*1 + 5*2 + 6*1) / (2+2+2+1+2+1)
Mean = 32 / 10
Mean = 3.2
5.00 x 13 hours = 65
$65 + $14.50 = $79.50