11,15,19,23
an = 11 + 4(n-1)
an = 11 + 4n - 4
an = 4n + 7
So you know that he earns $15 per hour so we can write that as 15h, h = # of hours worked
We also know he has to earn AT LEAST $200, so putting all this together we form the inequality(=< means less than or equal to): 15h =< 200
so now we have to solve for h (number of hours worked):
15h =< 200
(divide both sides by 15)
h =< 13 1/3
So, the painter must work a minimum of 13 and 1/3 hours to earn at least $200.
I'd personally go with A and C, The rest don't make too much sense. Don't count on my answer just yet though.
40÷30s? I think that is the answer, but I'm not completely sure...
