Aschool counselor surveyed 90 randomly selected students about the languages they speak ,16 speak more than one language fluently. based on these results, how many of the 1800 students at the school can be expected to speak more than one language fluently ?
a.113
b.288
c.389
d.320

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