1. Paula's mom just sold a new prom dress in her shop for $675.
However, the customer paid for the dress with a MasterCard.
Assuming Paula's mom receives 97 percent of the sale after paying a
3 percent credit card fee, how much will she actually receive from
the sale?

Paula's mother received $654.75 for the dress.

Step-by-step explanation:

Identify what you know:

1) Paula's mother sold a prom dress listed at $675.

2) Paula's mother receives 97% of the sale, after paying the 3% credit card fee.

Whenever calculating the percentage of something, you can use an easy formula:

% times number = x

For instance:

97% x $675.00 = $654.75

We can calculate how much the credit card fee is too!

3% x $675.00 = $20.25

i think the answer is b)

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)