<span>B: To make the box, we need 2 triangular ends,
and 3 rectangular sides. Side the volume = 3240
and the height = 30, the area of each base (end) = 108.
The sides have areas of 30 x 42 = 720, and 30 x 15 = 450,
and there are 2 of those. So total area = 108 + 108 + 720 + 900 = 1836 cm^2
creds to yahoo answer
</span>
The collect 19 boxes by the end of everyday.
Ms. Drake will earn 
in this time from the investment of 
at a simple interest with rate of interest 
<h3>What is the definition of simple interest?</h3>
Simple interest is a way to figure out how much interest will be charged on a sum of money at a specific rate and for a specific duration of time. Conversely, for compound interest, where we add the interest of one year's principal to the next year's principal to compute interest, the principal amount under simple interest remains constant.
Formula for finding simple interest is 
Given principal of Ms. Drake is 
Rate of interest is 
Time is 
years.
Interest 
Therefore, Ms. Drake will earn in this time.
To learn more about simple interest from the given link
brainly.com/question/7639734
#SPJ4
Follow these steps:
-8.4b - 4.2 = 12.6
Add 4.2 on both sides:
-8.4b = 16.8
Divide by -8.4 on both sides to give you the final answer of:
b = -2
So you're answer is indeed correct! Hope this helps and that the steps are clear enough!
