G(f(x)) = g(2x +7) = -3(2x +7) +9 = -6x -21 +9
g(f(x)) = -6x -12
1/5 gallon 1 hour
7/8 gallon x hour
x=(7/8)/(1/5)=(7/8)*5=35/8 hour =4 3/8 hour
Answer: 2.0
Step-by-step explanation:
The given expression : 
To solve the given expression , we need to follow BODMAS (Bracket→ Of Divide→ Multiplication →Add →Subtract).
According to BODMAS , first we simplified the expression present inside the brackets .
[10= LCM[10,5]]


[Multiply]
[Simplify]
[Add]
Hence, the value of the expression in the simplified form = 2.0
Answer:24600 , 16400
Step-by-step explanation:
Let the first part be x
So, second part will be 41000 - x
For amount x
SI = prt / 100
SI = x * 0.50 * 2
SI = 1x
For amount 41000 - x
SI = (41000-x) * 0.50 * 3
SI = 61500 - 1.5x
1x = 61500 - 1.5x
1.5x + x = 61500
2.5x = 61500
x = 61500 / 2.50 = 24600 for 2 years
2nd part = 41000 - 24600 = 16400 for three years