Unit 5 | lesson 13 unit checkpoint: decimals: addition and subtraction question navigator choose the answer. 1. (3 pt) compare the decimals 214.7 and 214.275. which statement is true? a. 214.7 > 214.275 b. 214.7 < 214.275 c. 214.7 = 214.275 question resources

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6