The amount of radioactive material changes with time. The table below shows the amount of radioactive material f(t) left after time t:
t(hours) 0 1 2
f(t) 100 50 25
Which exponential function best represents the relationship between f(t) and t?
f(t)= 0.5(100)^t

f(t)= 100(0.25)^t

f(t)=0.25(50)^t

f(t)= 100(0.5)^t

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

loloo

step-by-step explanation:

lololool

step-by-step explanation: