C 2x+4y
2(4)+4(7) = 36
2(4)=8
4(7)= 28
28+8=36
Answer:
They are on opposite sides of the river ( the riddle never said that they were on the same side )
One simply uses the boat to cross the river and the other person gets into the boat and takes it back to where it started.
Step-by-step explanation:
Answer:
Associative Property
Step-by-step explanation:
The associative property lets us change the grouping, or move grouping symbols (parentheses).
Answer:

a) $4110
Step-by-step explanation:
Let x represent number of rain coats and C(x) represent total cost to produce new line of rain coats.
We have been given that the fixed costs of $570 to set up for production, and variable costs of $30 per jacket.
The cost of x jackets would be
.
The total cost of x jackets would be variable cost of x jackets plus fixed costs that is $570.
Therefore, the total cost of producing x rain coats would be
.
To find the total cost of producing 118 rain coats, we will substitute
in the above equation as:



Therefore, the total cost of producing 118 rain coats is $4110 and option 'a' is the correct choice.