Which table shows exponential decay?
a 2-column table has 4 rows. the first column is labeled x with entries 1, 2, 3, 4. the second column is labeled y with entries 16, 8, 4, 2.
a 2-column table has 4 rows. the first column is labeled x with entries 1, 2, 3, 4. the second column is labeled y with entries 16, 128, 8, 4.
a 2-column table has 4 rows. the first column is labeled x with entries 1, 2, 3, 4. the second column is labeled y with entries 16, 12, 9, 7.
a 2-column table has 4 rows. the first column is labeled x with entries 1, 2, 3, 4. the second column is labeled y with entries 16, 8, 3, 1.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

soo this can be solve by using the formula:

f = p( 1 + i)^ n

where f is the future profit

p is the initial profit

i is the percent increase

n is the number of years

a . f = 30000 ( 1.05)^n

b. f = 30000 ( 1.05)^15

f = $62,368

there were only 2 presidents that were under the age of 45. theodore roosevelt, and jfk, that makes 5%