Agift shop buys greeting card $3.50 each and sells them at 80% mark up. at what price dose the gift shop sell each greeting card? practice 6.5 -percent of change

$6.30

Step-by-step explanation:

The 100% of cost is $3.50. The greeting cards are mocked up 80%. This means the customers pay 100% and 80% so 180%. To find the new price, create a proportion of equal ratios:

Solve for x through cross multiplying:

3.50(180) = 100(x)

630 = 100x

6.30=x

step-by-step explanation:

sry but any answer choices

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !