How do I go about solving this system without using matrices? K can be does not exist, is equal to, or does not equal to

  (-∞, 29/7) ∪ (29/7, ∞)

Step-by-step explanation:

The only value of k that will make the system have something other than one solution is the value that puts it in the same proportion as the coefficients in the first equation.

  3/21 ≠ k/29

  k ≠ 29/7 . . . . . . multiply by 29 and simplify

So, "all values of k" will be ...

  (-∞, 29/7) ∪ (29/7, ∞)

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d