So for the first one... Let's just use x for months and m for minutes.
(20m)+(.15m)
20 times the number of months plus .15 times the number of minutes
Same for the next one
(35x)+ (.10m)
35 times the number of months +.10 times the minutes.
Hello!
ANSWER
The painting would cost $387.45.
____________________________________________________________
EXPLANATION
2' 3" = 27"
3' 5" = 41"
Multiply the length by the width (in inches) of the painting.
27 * 41 = 1107
We now know that the area of the painting is 1107
Next, multiply the cost per square inch (0.35) by the total amount of square inches (1107).
.35 * 1107 = 387.45
12 can be divisible by 8,4