Statements 1. - ABCD
Reasons
1. Given
2. ZB is supplementary to ZA
2.
Interior Zs Theorem
ZD is supplementary to ZA
3. ZBZD
3. Supplements Theorem
4. ZC is supplementary to ZD
4. Same-Side Interior Zs Theorem
ZA is supplementary to ZD
5. ZCZA
5.
Theorem

part a: 1.08

part b: 27.59

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;