The height of a model rocket, H(t), is a function of the time since it was launched,
Height (feet)
888888888
10
20
Time (seconds)
What is the domain of H(t)?
O A. t20
B. Osts 26
O c. ts 169
O D. Osts 169

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

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

the answer is b.

step-by-step explanation: