Answer:
first we should add both purchase price
$4.45 + $9.55 = $14
so that
$20 - $14
=$6
Answer:
<h2><em><u>-9</u></em></h2>
Step-by-step explanation:

<em><u>By</u></em><em><u> </u></em><em><u>putting</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>values</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>-4</u></em><em><u> </u></em><em><u>,</u></em><em><u> </u></em><em><u>b</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>9</u></em><em><u>,</u></em>



= -(9)
= <em><u>-9 (Ans)</u></em>
1. A geometric sequence has a common ratio. You can find the ratio by dividing every number by its previous one. If it is consistent, then the series is geometric.
a: 8/1=8, 27/8=3.375
b: (-3/2)/3=-1/2, (3/4)/(-3/2)=-1/2
c. 7/4=1.75, 10/7=1.429
d. 20/25=0.8, 14/20=0.7
Choice b is the only one that has a common ratio, so it is a geometric series.
2. Every term is multiplied by 1/3, so the common ratio is 1/3. d is the answer.
Answer:
x = 69
Step-by-step explanation: