Answer:
(12,33)
Step-by-step explanation:
This system can be solved using the substitution method. This is where you replace one variable by another.
Step 1:
Plug in 
for the y
Step 2:
Combine like terms
Step 3:
Subtract 21 from both sides
Step 4:
Divide both sides by 3
Step 5:
Use the first equation and plug in 12 for x
Step 6:
Proof of work
Answer:
in option B all the function is decreasing .thanks
Answer:
C. G(x) has no root.
Step-by-step explanation:
A is wrong as the graph shows one minimum.
B is wrong as x approaches negative infinity, F(x) will approach infinity; not negative infinity.
D is wrong as it does not have 4 real roots.
Only answer left is C and it is true that G(x) has no root.
4 3/10 because you can turn two over five into 4/10 so to make -1 3/10 to -2 you -7/10 then -3 to get -5 then -6/10 to get -5 4/10
