When we use words and sentences to communicate, we follow rules that govern how we put words together. These rules are called... a. phonological awareness b. speech-progression c. syntax d. vocabulary

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.?