Antonia is factoring the polynomial, which has four terms.
21x3-63x2+15x-45
3[7x3-21x2+5x-15]
3[7x2(x-3)+5(x-3)]
Which is the complete factored form of her polynomial ?

3(x - 3)(7x^2 + 5).

Step-by-step explanation:

21x3 - 63x2 + 15x - 45

The greatest common factor of the constants is 3, so we have:

3(7x^3 - 21x^2 + 5x - 15)    

Now we factor this by grouping:

= 3 [7x^2 (x - 3) + 5(x - 3)

= 3(x - 3)(7x^2 + 5).

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300