Which type of reaction has the general formula of AB CD → AD CB? synthesis decomposition oxidation replacement

Which of the following must happen in order for productivity to increase? a. production levels remain unchanged while inputs increase. b. production levels rise while inputs decrease. c. production levels fall while inputs increase.

Land is to arable ; river is a, navigable b, shallow c, presumsor d, water

Sweater originally priced at $65 is on sale for 15% off. you also have a coupon that takes another $10 off. what percent of the original price do you pay?