Gerald has two free-lance jobs. The income he can make from his first job can be represented by the function M(x) = 408x + 327, where x is the number of weeks he works. The income he can make from his second job can be represented by the function A(x) = x2 + 61x. Which function best describes D(x), the income he can make from both jobs? A. D(x) = 409x2 + 388x B. D(x) = x2 + 469x + 327 C. D(x) = 409x2 + 61x + 327 D. D(x) = x2 + 61x + 388

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

the first option i believe

step-by-step explanation:

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀