Answer:
x(3/4-y/4)
Step-by-step explanation:
3/4x-1/4xy=x(3/4-y/4)
We know that
• The new charge was $0.50 to mail a letter weighing up to 1 ounce, and $0.21 for each additional ounce.
Based on the given information, the expression is

Where <em>x</em> represents additional ounces, and <em>y</em> represents a cost.
<h2>Hence, the function is</h2>
Answer:
The last one at the right
Step-by-step explanation:
It is a function because not of the x axis numbers are repeated.
The second one is correct
Answer:
function g is positive over (-∞, ∞)
function g has a y-intercept of (0,4)
function g decreasing over the interval (-∞, 0)
Step-by-step explanation: