Answer:
D
Step-by-step explanation:
took the test
13x+9=30
13x=30+9
13x=39
divide both sides by 13
x=3
12x+1=-13
12x=-13-1
12x=-14
divide both sides by 12
x=7/6
x+2+4=11
x+6=11
x=11_6
x=5
<em><u>D.</u></em>
A polynomial is an expression that looks similar to this:
3x³+x-3
