Sara is 33 years younger than rolando. the sum of their ages is 105. select the system of equations if sara's age is represented by s and rolando's age is represented by r.

a. s+r=33
s=r-105

b. s+r=105
r=s-33

c. s+r=105
s=r-105

d. s+r=105
s=r-33

e. none of these

Neveah and clint are baking muffins for the bake sale. they need to bake 30 muffins for their display case. clint has baked 4 so far, and neveah has baked 7. how many muffins (m) do they have left to bake? show your work!

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Harry the hook has 7 1/3 pounds of cookie dough.she uses 3/5 of it to bake cookie. how much cookie dough does she use to make cookie?