Which of the following is not a reason that polyethylene films has become the most popular greenhouse covering?

A) It comes in multiple thicknesses.
B) It is less expensive than most other coverings.
C) It has a long life expectancy.
D) When used as a double layer it has low heat loss.


C

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Use economic equivalence to determine the amount of money or value of i that makes the following statements correct.

(a) $5000 today is equivalent to $4275 exactly 1 year ago at i = ___% per year. (b) A car that costs $28,000 today will cost $____ a year from now at i = 4% per year. (c) At i = 4% per year, a car that costs $28,000 now, would have cost $____ one year ago. (d) Last year, Jackson borrowed $20,000 to buy a preowned boat. He repaid the principal of the loan plus $2750 interest after only 1 year. This year, his brother Henri borrowed $15,000 to buy a car and expects to pay it off in only 1 year plus interest of $2295. The rate that each brother paid for his loan is ___ % for Jackson and ___ % per year for Henri. (e) Last year, Sheila turned down a job that paid $75,000 per year. This year, she accepted one that pays $81,000 per year. The salaries are equivalent at i = ____% per year.

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There is a growing concern among agribusinesses that there will be too many college graduates with

training in the field of agriculture.

Indicate whether the statement is true or false.

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The wire sizes used in welded-wire fabric reinforcement are designated by _____

a. AWG wire gauge b. cross-sectional area in hundredths of a square inch c. cross-sectional area in hundredths of a square centimeter d. diameter in thousandths of an inch

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As long as all the surfaces of an object are parallel or at right angles to one another, they may be represented in one or more ____ views.

A. orthogonal B. parallel C. auxiliary D. regular

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