Help!! will give brainliest to a answer with explanation!

second one

Step-by-step explanation:

second one -30 that the answer

$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

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225