For which value of x must the expression

59x
be further simplified?

a.10
b.13
c.15
d.18

simplified in what way?

18

The expression 59x can be further simplified for any value of x. Therefore, there is no specific value of x for which the expression must be further simplified. The correct answer is None of the above.

To determine for which value of x the expression 59x must be further simplified, we need to find the value that would result in an expression that cannot be simplified further.

The given expression is 59x.

Since there are no other terms or operations involved in this expression, the only way it can be further simplified is if x is a fraction or has a common factor with 59.

Now, let's check each option one by one:

a. When x = 10
The expression becomes 59(10) = 590, which is a simplified form. It cannot be further simplified.

b. When x = 13
The expression becomes 59(13) = 767, which is a simplified form. It cannot be further simplified.

c. When x = 15
The expression becomes 59(15) = 885, which is a simplified form. It cannot be further simplified.

d. When x = 18
The expression becomes 59(18) = 1062, which is a simplified form. It cannot be further simplified.

After checking all the options, we see that regardless of the value of x, the expression 59x cannot be further simplified. Therefore, the answer is none of the given options.