Simplify (7x2 - 2x + 9) + (3x2 + 15x - 4)

Step-by-step explanation:

7x^2 + 3x^2 = 10x^2

-2x + 15x = 13x

9 - 4 = 5

Put these together. Don't do any more than putting them together in a string.

10x^2 + 13x + 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