Answer:
-4c + 5d
Step-by-step explanation:
3 - 7 = -4, so c is equal to -4.
Since there is only one value for d, d stays the same as 5d.
no
as 7 is a prime numbers and prime numbers cannot be reduced .
Answer: 10 hours
Explanation:
Bill = $720
Material = $375
Labour = $34.50x
375 + 34.5x = 720
34.5x = 345
x =10
