You use 66 gallons of water on 2020 plants in your garden. at that rate, how much water will it take to water 3030 plants?

99 gallons bc for each 1,010 plants their is 33 gallons so multiplying by 3 you will get 99 gallons for 3,030 plants 

Proportion

66/2020 = x/3030

now you will cross multiply the number 3030 by 66 then divide by 2020

so x=99

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 : )