Sure I can help to the best of my ability if possible . Only on mathematics
You multiply .65 times 100 and you get 65 which is 65% of 100
-4x^4 - 15x^2 + 1 - 19/x^2 is your answer
Hope I helped :)
$2.38/0.40 lb = $5.95/1 lb
The spinach cost $5.95 per pound.