How many solutions does the system have? You can use the interactive graph below to find the answer.
{
21
x
+
6
y
=
42
7
x
+
2
y
=
14

⎩
⎪
⎪
⎨
⎪
⎪
⎧
​

21x+6y=42
7x+2y=14
​

Choose 1
Choose 1

(Choice A)
A
Exactly one solution

(Choice B)
B
No solutions

(Choice C)
C
Infinitely many solutions

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

The variable in a relation who’s value depends on the value of the independent variable is called what?

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.