Answer:
90-15x
Step-by-step explanation:
x being the number of weeks
First, bring the one down.
Then, -3*1=-3, so it goes underneath the -13.
Add, -13+(-3)=-16
So, -3*-16=48
Finally, -48+48=0
x-16, (A).
24x^2
When expanded (x+2)^4= x^4+8x^3+24x^2+32x+16
The only term that matches with these is 24x^2
