You only need to figure the amount of change in this problem, so multiply the time (7 weeks) by the weekly discount (6$)
7 x 6 = $42 change in price
So since only 20 dollar bills and the other one is a 50
then
so we find some combos that will work
five 20's make 100
we
notice that we can only have 20's in multipules of 5 to make 100's
becauause 4 20's makes 80 and 3 20's make 60 and 2 20's make40 and none
of those add to 50 evenly to make 100's
(probably confusing but I hope you understand if you think about it)
so we have
5 20's =100
10 20's=200
15 20's=300
20
25
30
35
40
45 20's=900
50 20's=1000
so how many multiplules did we have?
10
but wait, if we havve 1000 in all 20's we still need at least one 50 so we subtract 100
900:9
answe ris 9 stacks
answer is 9 stacks or A
Answer:
4%
Step-by-step explanation:
First, we turn this into a fraction:
3/75 = 1/25 = 4%
So 3 is 4% of 75
Just find the interest paid after one year, and then multiply the result by 6 (years). This gives you the amount of simple interest.
The easiest approach would be to use the formula i = p r t. In this case p = $600, r = 0.04, and t = 6 years.
Solve for x over the real numbers:
x^2 = 49
Take the square root of both sides:
Answer: x = 7 or x = -7
