What's the tenth term of a sequence with an explicit rule of ƒ(n) = 2 + (–3)(n – 1)? a. ƒ(10) = –25 b. ƒ(10) = –30 c. ƒ(10) = 27 d. ƒ(10) = 32

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

600,000,000,000, or 6e14

step-by-step explanation:

probably the last option

step-by-step explanation: