Answer:
$91/$15=x
Step-by-step explanation:
$100-$9=$91 and 91÷15= 6. omething which means only 6 pizza can be purchased.
The answer up above just says 91 divided by 15 gives you the amount of pizzas. He can only buy 6 pizzas with a pound remainding
<h2>8 unit tiles should be added</h2>
Step-by-step explanation:
Function given is
. We wish to add more unit tiles to the function so that it becomes a complete square.
Since the given function is of order 2, the side of the square will be order 1. Let us assume a general order 1 expression
to be the side of the square.
As the function forms the square after adding some
unit tiles, 

From comparision, 
∴ 8 more unit tiles are required to complete the square.
Answer:
He has $390 left in his account.
Step-by-step explanation: