If you earned up to $113,700 in 2013 from an employer, your social security tax rate was 6.2% of your income. if
you earned over $113,700, you paid a fixed amount of $7,049.40.
b. how much social security tax would someone who made $50,000 owe?

$3100

Step-by-step explanation:

We are given that

If you earned upto $113,700 in 2013 from an employer then your security tax=6.2% of income

If you earned over $113,700 then, you paid amount of tax=$7049.40

We have to find the social security tax when you would made $50000.

Let x be the income and f(x) be the amount of tax.

Substitute the values then we get

$3100

When the income of someone is $50000 then you  paid  the security tax $3100.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.