Answer:
$315
Step-by-step explanation:
You are going to want to use the simple interest formula for this. The one below is modified for solving the interest earned.

<em>I = interest amount</em>
<em>P = principal amount</em>
<em>r = interest rate (decimal form)</em>
<em>t = time</em>
<em />
Now we can plug in the values into the equation:


This means that Rachel earned $315 worth of interest in the 15 year period.
When a rate is simplified so that it has a denominator of 1 unit, it is called a UNIT RATE.
Hope this helps!
Answer:
Anneliese needs
cups of butter to make
of the recipe for cookies.
Step-by-step explanation:
According to the statement, a recipe for cookies require
cup of butter and the amount of butter required to prepare
of the recipe is determined by the following simple rule of three:


Anneliese needs
cups of butter to make
of the recipe for cookies.
Answer:
x = 7.3
Step-by-step explanation:
When solving for missing sides using angles, use trig functions.
We have the angle 63° to use.
We are given the hypotenuse of the triangle, as well as the side adjacent to the angle, so we can use the cos function.
Cos T = (adjacent side)/(hypotenuse)
Here we know 'T' and the hypotenuse, so plug them in and solve
Cos 63° = x/16
(16)Cos 63° = x (multiply both sides by 16 to isolate 'x')
7.263847996 = x (use your calculator to solve the left side)
7.3 = x (rounded to the nearest 10th)
3 1/4 cups of flour for one batch
he will need 1/2 of 3 1/4cups for the 1/2 batch
1/2 x 13/4=13/8= 1 5/8 more cups