A1=6*1-12=-6 arithmetic sequence
a14=6*14-12=72
sum =n(a(1)+a(n))/2
sum =14*(-6+72)/2=462
Lets x is the labor charges per hour
3x + 126.53 = 220.28
3x = 220.28 - 126.53
3x = 93.75
x = 93.75 / 3
x = 31.25
answer: $31.25 per hour charged for labor
Answer:
( 11/2, 5 ) !
Step-by-step explanation:
Refer to the picture!
Answer:
it's self explanatory 25
Step-by-step explanation:
r -12 = 25
r = 37
37 - 12 = 25