in problems (a)-(d) above, what effect does addition have on the terms in parentheses when you remove the parentheses?

It doesnt affect the equation

Step-by-step explanation:

If it were like this

8-(-9) means posotive minus negative 9

25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it

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;