Pedro sells wooden children's furniture at a crafts market. he charges $65 for a chair. the materials for a chair cost $45 and there is a $75 fee for a booth at the market. how many chair must he sell to make a profit?

65= 45x-75

+75

140=45x

140/45=45x/45

3.1111=x

round up to 4

4 chairs

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify