Let
be the price of an adult ticket, and
the price of a child ticket.
The sentence "Three adults and four children must pay $122 for tickets" translates to 
The sentence "Two adults and three children must pay $87" translates to 
Which leads to the linear system

You can solve this system as you prefer, for example you can multiply the first equation by 2 and the second by 3 to get

Now subtract the first from the second:

Now plug this value for c in any of the equations, for example the first:

Surface area define or calculate the exact space that each face of the said shape is taken up while the volume is how much space is inside the said object. The area use the unit that is squared because it only measured 2 face in the shape while the volume measures 3 faces in the object. an example of an area is a card board area, while the volume is the glass of water.
Answer:
6 or -2
Step-by-step explanation:
|3t - 6| = 12
3t - 6 = 12
3t = 18
t = 6
3t - 6 = -12
3t = -6
t = -2
Answer:
The answer is ohms=4
Step-by-step explanation:
substitute the letters with numbers and solve:
E=IR
12=I 3
12/3=4
-3x+17 because you want to simplify first by multiplying each term and then you combine like terms(x) and then you write the variable first