The answer depends on how long her yoga class is. If she is taking four breaths every ten seconds she'd take 24 breaths a minute or 1440 breaths an hour.
Replace X and Y in the given equations and see if they are true:
2(5) + 2(1) = 10+2 = 12... does not equal 11 So this in not right.
2(5) +3(1) = 10 + 3 = 13 this is correct.
The answer would be: 2x+3y=13
10 minus 9 would be 1 and 1 plus 8 is 9 so your answer is 9!!!
20 because if you take 20 half it that would be 10 then take away 4 that would then equal 6.
The answer is C. if you need the work I can give it to you
