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Let r(t) represent the rate, in square feet per minute, at which a groundskeeper is mowing a lawn t minutes after 3 p.m. what expression represents the area, in square feet, of the lawn that is mowed between 3 p.m. and 5 p.m.?

Choose the sentences that use correct capitalization. a. my friends and i meet on the weekends to watch music videos. we enjoy singing and eating pizza. b. my friends and i meet on the weekends to watch music videos. we enjoy singing and eating pizza. c. my friends and i meet on the weekends to watch music videos. we enjoy singing and eating pizza. d. my friends and i meet on the weekends to watch music videos. we enjoy singing and eating pizza.

Many of the houses have fireplaces that are 15% efficient and use 15 kg of wood to heat a room to 20 degrees celsius. wanting to reduce their ecological footprint, several of the homeowners are considering switching to woodstoves that are 75 percent efficient. if they do change to using a woodstove, how many kilograms of wood will they save per use?