Answer:
7
Step-by-step explanation:
20 • 35% = 13 20-13=7
Answer:

Step-by-step explanation:
Do FOIL, first outside inside last
3x × 3x = 9x^2
3x × -7 = -21x
7 × 3x = 21x
7 × -7 = -49

So it would just be 9x^2 - 49
Answer:
28x^3
Step-by-step explanation:
Answer:
I think a) vertical, but I'm not 100% sure.
Step-by-step explanation:
Answer:
4,296
Step-by-step explanation:
because 4 thousands = 4,000, 9 hundreds = 900, 2 tens = 20 and 6 ones= 6, 400 + 900 + 20 + 6 = 4,920