For this case we have that the total minutes spent in yoga classes last week was 165.
Subtracting the 45 minutes of the Saturday day we have:

Those 120 minutes were distributed in the weekly yoga classes
where each lasted 30 minutes.

So, 4 week yoga classes were held
ANswer:
4 week yoga classes were held
The picture is too blurry for me even when I try zooming in on it
The
first choice gives you the same result. The factor of 5 can be removed to the outside of the summation symbol.
Answer:
D
Step-by-step explanation:
slope = rise / run
slope = (5 - 3) / (-2 - 2)
slope = 2 / -4
slope = -2 / 4
slope = -1/2
A(b - c) = d
ab - ac = d
ac = ab - d
c = (ab - d)/a