Which choice is equivalent to the expression below?

The choice is equivalent to the expression  ⇒ A

Step-by-step explanation:

Let us revise some rules of exponents

Remember 1.23 can be written as 1 + +

∵ The expression is

- Write the exponent as a sum of its digits

∵ 6.38 = 6 + +

∴ The expression can be written as

- We can change the adding of exponents to the product of the

    same base as the 1st rule above product

∴    =

∴    =

The choice is equivalent to the expression

a=r

d=q

c=p

b=s

hope this !

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg