Answer:
3 large doors
Step-by-step explanation:
Given

Represent small door with S and large with L

From the question, we understand that;

So, we have that


Required
Determine the number of Large doors that can be cut from the board
To do this, we simply divide the size of the board by the size of the large cabinet
i.e.


Convert feet to inches



Get the integer part of the decimal

Hence:
3 large doors can be gotten from the board
you would have 9.375 pieces or 75/8 pieces, depends on how you look at it
Answer:
y = 4.125x + 496.25
Step-by-step explanation:
Set the data up as points. Then deal with the points.
Givens
(30,620)
(70,785)
y2 = 785
y1 = 620
x2 = 70
x1 = 30
Formula
Slope = (y2 - y1) / (x2 - x1)
Solution
Slope = (785 - 620)/(70 - 30)
Slope = 165 / 40
Slope = 4.125
===================
Now you need the y intercept. Either one of the two given points will give you that.
y = 620
x = 30
m = 4.125
y = mx + b
620 = 4.125*30 + b
620 = 123.75 + b
620 - 123.75 + b
b = 496.25
13 should be b and
14 is a because geometric mean to have a common ratio