(6.4x20^5) + (2.5x10^3) a. 8.9x10^8 b. 6.425x10^5 c. 642.5x10^3

B is your answer for
This expression

A quotient is the number which is produced by the division of two numbers.
I.e. the quotient of 4 and 2 is 2 (since 4 ÷ 2 = 2)

So when x is divided by 3, the quotient is more than 7
We can make the algebraic expression:
' x / 3  ' is more than 7
x / 3 > 7

We then simplify:
x / 3 > 7
x > 21

Then answer is 'x is greater than 21'