BRAINLIST IF YOU HELP ASAP

A radioactive Isotope decays at a rate proportional to the amount present. If the Isotope has
a decay rate of 12.10% per thounsands of years and the current amount of the isotope is
135.2 mg. How much of the isotope will remain after 2.2 thounsand years? Round your
answer to the nearest tenth.

a- 101.8
b- 99.8
c- 90.3
d- 129.7

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

look at photo

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches