If the sum of twice a number and four is eighteen, what is that number?

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

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

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.