Write 8.001 using words.

i need

Eight and one thousandth

Step-by-step explanation:

Writing 8.001 in words is eight and one thousandth.

OR

Eight point zero zero one.

Note that the place value of the numbers are as follow:

8= units; 0 = tenth; 0 = hundredth and 1 = thousandth.

Immediately after the decimal point are tenth, hundredth and thousandth.

$10

Step-by-step explanation:

Assume the price of the phone case is x.

Assume the price of the charging cord is y.

Discounted price for phone case :  15% * x

= 0.15x

Discounted price for charging cord = 0.15y

Expression is therefore:

0.15x + 0.15y = 4.20

0.15 * 18 + 0.15y = 4.20

2.7 + 0.15y = 4.20

0.15y = 4.2 - 2.7

y = 1.5/0.15

y = $10