The scale factor of the blueprint of a shopping mall to the actual shopping mall is 1in/18ft. the area of the mall on the blueprint is 190in^2

 

Step-by-step explanation:

The missing question is: "What is the area of the actual shopping mall?"

Let be "x" the area of the actual shopping mall in square feet.

According to the information given in the exercise, the scale factor used is:

Then, the scale factor for the area is:

The exercise provides you the area of the mall on the blue print (which is ). Then, knowing this, you can set up the following proportion:

Finally, you must solve for "x" in order to find its value. This is:

Therefore, the area of the actual shopping mall is

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )