13. A soil sample near Chernobyl was found to contain 187 kBq/m² of cesium-137. If the half-life of cesium-137 is approximately 30 years, how much cesium-137
will remain in the sample after 90 years?
(A) 93.50 kBq/m²
(B) 23.38 kBq/m²
(C) 6.23 kBq/m²
(D) 1.58 kBq/m2

if x = 1, then the answer is 3.5

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

hey there : ) your answer would be a.

step-by-step explanation:

v=1788.75

step-by-step explanation:

i belive that is the answer