How many significant figures will the answer to the following problem have? You do not have to solve the problem. 8.82 -3.4 =​

6.3x+14 and 1.5x-6 answer in simplified form

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

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)