Answer:
and 
Step-by-step explanation:
First of all, even if the system is of 4th degree, by looking at the shape of the equations I am expecting up to 2 solutions.
The easiest way to solve it, since both equation are in the form y= something, is to equate both RHSs.

which tells us that either
or 
Now we can replace these value of x in one of the two to finish our work: 

Answer:
correct 42 in bsae 10 is 60
Answer:
80
Step-by-step explanation:
110-180=70
30+70=100
100-180=80
M equals 3x+21 because you add 2x+1x=3x.then you add 14+7=21.then you combine them together to get 3x+21
I need to see the graph please