Answer:
......................................,........
The expression in company B represents that is is in arithmetic progression where first term is 42000 and common difference is 1800 . So we have to use the formula of sum of n terms which is

Where a is the first term, n is the nth term, d is the common difference
On substituting there values,we will get

= 15(84000+52200) = 15*136200 =2043000
And for company A, it is

Difference between them =2043000-2002500= 40500
So the correct option is the second option .
Answer: $33.00
Step-by-step explanation:
Given
Mr. Claussen needs 15 Pounds of ground beef
It is stated that 2 pounds of beef cost $4.40
Using unitary method
1 Pound cost 
For 15 pounds it is

Thus, he has to spend $33 for 15 pound meat
Answer:
4 hours
Step-by-step explanation:
$50 - $14 = $36
36 / 9 = 4
1/3 times 11/16 equals 11/48