Which relation is a function of x? O {(1,2), (7,6), (3, 2), (1.0), (5, 6)}
X
olololo
2
-6
9
47
O x-3y2-7
-5 -4 -3 2-IN1
3
4
5
X
-2
-37
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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