Please help I’m desperate (any weird links will be reported please don’t do that)

3(3)^2 + 5(3)

3(9) + 15

27+15

42

Step-by-step explanation:

Where x is seen in the original equation, replace it with 3 and then work it out.

plug in x as 3

3(3)^2+5(3)

Simplify

27+15= 42

translate k to n and reflect across the line containing jk.

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