Suppose a radioactive substance decays at a rate of 4% per hour. How long does it take until the substance is half of its original weight?

The answer is 17 1/3 hours

step-by-step explanation:

given expression is

we have radical  

we need to select an option that has same radical

(a)  

this expression has cube root instead of square root . so it is not a like radical.

(b)

y is included inside the radical. so it is not a like radical.

(c)

this expression has cube root instead of square root . so it is not a like radical.

(d)

5 is inside the radical square root. so it is   a like radical.