Jada is making a circle graph of her college tuition and fees. She spends 10% of her expenses on board. Since a circle has 360°, Jada knows that the central angle for that section of the graph is 36°. She thinks she can use what she knows about angle relationships to help her figure out the number of degrees for the central angle for the section of the graph that represents her room expenses. Which equation could be used to help her solve this problem?

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 : )

Where is the picture