As of Thursday, sales reps at a major newspaper had sold the following advertising space for the Sunday paper. 3 full pages, 5 half-pages, 7 quarter-pages, and 13 eighth-pages. If 10 full pages have been reserved for advertisements in the Sunday paper, how much space is still available to be sold?

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