Ashoe company wants to gauge opinions of a new shoe design. they send out 100 pairs to people in four different cities, but because of cost constraints they can interview only 40 people total.

they randomly choose 10 people from each city to interview. the table shows how many people in each city rated the shoe "positive" in each of three categories.

using the sample results, estimate the proportion of the entire population that would like the color of the shoe.
a) 0.29
b) 0.4
c) 0.625
d) 0.725

0.4 on usatestprep

Step-by-step explanation:

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

x-3y=4

step-by-step e