You are choosing a new cell phone. the screen on your current phone is 10.8 cm high and 6.1 cm wide. the screen on the new phone is 12.4 cm high and 6.9 cm wide. how much larger is the area of the new screen than the area of the old screen? choose the sentence that describes how the quantities in this problem are related

10.8 + 6.1 +12.4 + 6.9 =36.2

Step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional