For wages less than the maximum taxable wage base, Social Security contributions (including those for Medicare) by employees are 7.65% of the employee's wages.†

(a) Find an equation that expresses the relationship between the wages earned (x) and the Social Security taxes paid (y) by an employee who earns less than the maximum taxable wage base.
y= .0765x

(b) For each additional dollar that an employee earns, by how much is his or her Social Security contribution increased? (Assume that the employee's wages remain less than the maximum taxable wage base.)
$ ______

i just need to know (b).

To find the increase in Social Security contribution for each additional dollar earned by an employee, you need to determine the percentage increase in the tax paid (y) for each additional dollar earned (x).

Since the equation that expresses the relationship between wages earned (x) and Social Security taxes paid (y) is y = 0.0765x, you can calculate the increase in the tax paid for each additional dollar earned by taking the derivative of y with respect to x.

Taking the derivative of y = 0.0765x, we have:

dy/dx = 0.0765

This derivative represents the rate at which the tax paid (y) changes with respect to the wages earned (x) when x is the maximum taxable wage base. In this case, it equals 0.0765, which means that for each additional dollar earned, the Social Security contribution is increased by 0.0765 dollars.

So, for (b), the increase in Social Security contribution for each additional dollar earned is $0.0765.