Answer:
The second answer is in standard form of equation
Answer:
20.25
Step-by-step explanation:
45x.40=20.25
y = mx + b
5 = 12(-3) + b
5 = -36 + b
b = 41
y = -3x + 41
Total cost=$142
cost of parts=$62
cost paid for labour=$142-$62=$80
According to question,
》cost of labour per hr=$32
which can be written as,
》cost of labour/time=$32
Use cross multiplication,
》time=cost of labour/32
Since cost of labour is 80,
Time=80/32
=2.5hrs
Answer:
Solution: C) 7.815
Hint: From Chi-square table with (k-r-1)=(6-2-1) = 3 d.f the critical value = 7.8147
