Hi there,
This is a division problem therefore we are going to divide.
27 square inches ÷ 6 inches = 4.5 inches.
So, the width is 4.5 inches
No.
Its still 3 ounces no matter how many you have
We can use the coordinates (-4, 5) and (0, 6) to find the slope.
Slope Formula: 
Solve: 
The slope of the line is \Large\boxed{\mathsf{1/4}}
Written in slope-intercept form: y = 1/4x + 6
Hope This Helped! Good Luck!