
The rule I'm using is

note how I rewrote "3" into the square root of 9, so that everything would have a square root over it, and that allows me to use that rule above.
Answer:
The answer to your question is: 320
Step-by-step explanation:
Data
1/4 of the calories in a chocolate - 10 = calories in an apple
Equation
Calories in a chocolate bar = 4(calories in apple + ten)
= 4(70 + 10)
= 4(80)
= 320
Answer:
Your answer is not there.... but my answer is... so, check it put...
Step-by-step explanation:
P is the principal amount, $400.00.
r is the interest rate, 7.5% per year, or in decimal form, 7.5/100=0.075.
t is the time involved, 6 month period(s) time periods.
To find the simple interest, we multiply 400 × 0.075 × 3 to get that:
The interest is: $90.00