Me
and explain how u do it

before you proceed to solve, change the 2.2 to standard form

which is

because in standard form, movement to the right gives a negative exponent of 10 depending on the number of moves you make.

and for 2.2 we move only once that is why we had negative exponent of 1

now the new equation is

from the first law of indices, which states, if numbers of the same base multiply each other, take only one of the base and add the exponent,

so now the equation is

now multiplying the bracket

so now the whole equation becomes

as final answer

answer: your correct answer is b. d.

step-by-step explanation: