Answer:
9x^4+5x^2-2x-13
Step-by-step explanation:
To find the answer I just added all of the dots after the three (amount of books read) and it is equal to 7. :D hope this helped :D
Answer:
1.35kg
Step-by-step explanation:
450g : 6 people
x : 18 people
To get from 6 to 18, multiply by 3 so do the same to the other side
450 × 3 = 1350g
To convert from g to kg divide by 1000
1350 ÷ 1000 = 1.35kg
Answer:

it must always have one of the sign