Alicia puts 400$ in a band account. Each year the account earns 5% simple interest. How much money will be in her account in 6 months?

You want to calculate the interest on $400 at 5% interest per year after 6 month(s).

The formula we'll use for this is the simple interest formula, or:

Where:

P is the principal amount, $400.00.

r is the interest rate, 5% per year, or in decimal form, 5/100=0.05.

t is the time involved, 6month(s) time periods.

Since your interest rate is "per year" and you gave your time interval in "month(s)" we need to convert your time interval into "year" as well.

Do this by dividing your time, 6- month(s), by 12, since there's 12 months in 1 year.

So, t is 0.5year time periods.

To find the simple interest, we multiply 400 × 0.05 × 0.5 to get that:

The interest is: $10.00

Usually now, the interest is added onto the principal to figure some new amount after 6 month(s),

or 400.00 + 10.00 = 410.00. For example:

If you borrowed the $400.00, you would now owe $410.00

If you loaned someone $400.00, you would now be due $410.00

If owned something, like a $400.00 bond, it would be worth $410.00 now.

Step-by-step explanation:

Hopes This Helps :)

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40