Answer:
Step-by-step explanation:
Let's rewrite all the fraction to ratios
4:6, 10:12, 2:5, 4:7
Now, using the direct proportion, if one increase/decrease, the other increase/decrease by the same amount
4:6 = (4x2) : (6x)2 = 8:12
10:12 =( 10:2) : (12:2) = 5:6
2:5 = (2x3) : (5x3) = 6:15
4:7 = (4x2) : (7x2)= 8:14
Is that the entire question. If you're looking to find the unit price (how much you are being charged for on unit) you can divide 300 by 19 and you get 15.79, which I rounded to the nearest tenth
Rectangles or any quadrilateral