In recent years, a number of companies have been formed that offer competition to at& t in long-distance calls. all advertise that their rates are lower than at& t’s, and as a result their bills will be lower. at& t has responded by arguing that for the average consumer there will be no difference in billing. suppose that a statistics practitioner working for at& t determines that the mean and standard deviation of monthly long-distance bills for all its residential customers are $17.09 and $3.87, respectively

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!

i believe that the answer is

b. y-1=-2(x-4)

hope this !

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!