According to a poll, approximately 49% of americans spent over $500 on holiday presents in 1998. suppose you took a random sample of 120 shoppers and found that 71 spent over $500 on holiday presents in 1999. using a null hypothesis that the proportion is .49 and an alternative that the proportion is greater than .49, what would a hypothesis test suggest about the proportion of people spending over $500 on holiday presents?

if x decreases by 4 then y increases by 10

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!