**Answer:**

**Step-by-step explanation:**

Hello,

Shall we begin?

5y + 9 = - 2y + 30

5y + 2y = 30 - 9

7y = 21

y = 21/7

y = 3

<span>**Answers: y = 3**</span>

To get second discount, 90% of the price must be > $100

hence 90% of 199.99 = 199.99/100*90 = $179.991 (Price after 1st discount)

Since the price after first discount is > $100 , it is eligible for second discount.

Price after 2nd discount of 10% = 179.991/100*90 = $161.9919

Savings = 199.99-161.9919 = 37.9981 = 38 dollars saved.

*note, you Do Not -20% straight from original price as it says 10% After first discount.

A 10 = 10;

a 20 = 40;

a n = a 1 + ( n - 1) * r => 10 = a 1 + 9 * r, and, 40 = a 1 + 19 * r => 30 = 10 * r => r = 3 => a 1 = 10 - 27 => a 1 = -17;

a 100 = a 1 + 99 * r => a 100 = - 17 + 99 * 3 => a 100 = -17 + 297 => a 100 = 280.

You still need to raise 1,676 to complete the 14,000