A $300 mountain bike is discounted by 30% and then discounted an additional 10% for shoppers who arrive before 5am. If you go to the store at 4:30 am, how much will you pay? I did 300^30 =90. 300 -90 ==210 ^ 10 =2.10. 210-2.10= 207.90. Is this correct?

You are almost there. You have everything right except the 10% off. $210*.10=21 $210-21= $189.

Thank you. I moved the decimal too many places. Thanks again

No, your calculation is not correct. Let me guide you through the correct steps:

Step 1: Start with the original price of the mountain bike: $300.
Step 2: Apply the first discount of 30% by multiplying $300 by 0.30: $300 * 0.30 = $90. This gives you the amount of discount you will receive.
Step 3: Subtract the discount amount from the original price: $300 - $90 = $210. This is the price after the first discount.
Step 4: Apply the additional discount of 10% by multiplying $210 by 0.10: $210 * 0.10 = $21. This gives you the amount of the additional discount you will receive.
Step 5: Subtract the additional discount amount from the price after the first discount: $210 - $21 = $189. This is the final price you will pay if you go to the store at 4:30 am.

So, the correct answer is $189.

To calculate the final price of the mountain bike, you need to follow a step-by-step approach.

Step 1: Calculate the discount for the first 30% off:

Discount = Original Price * (Discount Percentage/100)
Discount = $300 * (30/100)
Discount = $90

Subtracting this discount from the original price, we get:

New Price = Original Price - Discount
New Price = $300 - $90
New Price = $210

Step 2: Calculate the additional discount for shoppers who arrive before 5 am, which is 10% off the new price:

Discount = New Price * (Discount Percentage/100)
Discount = $210 * (10/100)
Discount = $21

Subtracting this additional discount from the new price, we get the final price:

Final Price = New Price - Discount
Final Price = $210 - $21
Final Price = $189

So, if you go to the store at 4:30 am, you will be paying $189 for the mountain bike, not $207.90 as you calculated.