Answer:

Step-by-step explanation:
Given the function
, to find
, simply substitute
into the function.
Solving, we get:

Answer:
625
Step-by-step explanation:
The modulus of 3 - 4i is
=
=
= 5, thus
|
|
= 
= 625
Answer:
$16
Step-by-step explanation:
28/7=4
4*4=16
Answer:
15.40/3.5=$4.40 dollars a pound
7.65/1.8=$4.25 dollars a pound
Step-by-step explanation:
divide to get the unit price
so 7.65/1.8=$4.25 dollars a pound is the cheaper unit as well.