Which of the following is NOT a factor that manufacturers of hard hats can use for rating their products?
A) High visibility
B) Lower temperatures
C) Physical attractiveness
D) Reverse donning
C) Physical attractiveness
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Consider two walls of a house that are identical except that one is made of 10-cm-thick wood while the other is made of 25-cm-thick brick. Through which wall will the house lose more heat in winter?
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An engineer planning for her son’s college education made deposits into a separate high-risk brokerage account every time she earned extra money from side consulting jobs. The deposits and their timings are as follows:
 FIGURE 1.png)
(a) If the account increased at 15% per year and inflation averaged 3% per year over the entire period, what was the purchasing power of the money in the account in terms of year zero CV dollars immediately after the last deposit in year 17?
(b) Use a spreadsheet to recalculate the purchasing power if the account actually earned 6% per year and inflation was higher than expected at 4% per year. Compare the purchasing power with the total amount deposited over the 17 years.