Answer:
the first and second one
Step-by-step explanation:
the two last ones go over budget
1) 20×30=600 30×50=1500 total is 2100
2)50×30=1500 10×50= 500 total is 2000
3) 40×30=1200 40×50=2000 total is 3100>over budget.
4) 20×30=600 60×50=3000 total is 3600> way over budget.
Reading that as

By the fundamental theorem of calculus, the first derivative is

and so the second derivative would be

which means
Step-by-step explanation:
According to the question,
l+5=2h
150 cc per 4 hours divide by 4 equals 37.5 cc per hour