1600(-400)= f is the y axis and -400 because its taking money from his account
Answer:

Step-by-step explanation:
Given


Required
Eliminate a
Multiply the first equation by -4

Add to the second equation

Solve brackets

Open bracket


At this point, a has been eliminated;
From the list of given options, the option that answers the question is 
Answer:
2 1/2
Step-by-step explanation:
Hope this helps :P
Have a great day!
Answer:
5.4
Step-by-step explanation:
3/5 x 9 is 5.4. To find the area of a rectangle you need to multiply the length times the width.