Answer:
One adult ticket is $4 and one child ticket is $7
Step-by-step explanation:
Make a system of equations
2x + 10y = 78
8x + 5y = 67
Solve by elimination, multiply the 2nd equation by -2
2x +10y = 78
-16x -10y = -134
Add the equations
-14x = -56
x = 4
The price of one adult ticket is $4
Plug 4 in as x to find y
2(4) + 10y = 78
8 + 10y = 78
10y = 70
y = 7
The price of one child ticket is $7
each gift =$10
total=y
number of gifts =x
therefore,total= each gift * number of gifts
=$10* x
When put into standard form, the equation turns out like this:
-2m^4-6m^2+4m+9
Into 3 significant figures=4210
