Use expressions for even integers to show that the product of two even integers is an even integer.

Step-by-step explanation:

The product of two even numbers is even.

Let m and n be any integers so that 2a and 2b are two even numbers.

The product is 2a(2b) = 2(2ab), which is even.

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720