Answer:(-5.6, -1.4)
Step-by-step explanation:
We need to write a proportion to solve this
7/3=35/x
105=7x
divide each side by 7
15=x so, there were 15 burgers without cheese.
We could add the cheese burgers 35 to burgers without cheese 15
35+15=50 burgers were sold.
<span>15x+12=45+4x </span>⇒15x - 4x = 45 - 12 ⇒ 11x = 33 ⇒ x = 3
Hey there! :D
When powers are outside the parenthesis, you multiply them.

-2*5= -10
We now have:

When you have a negative exponent, you bring it to the bottom of a fraction to make it positive.

"C" is the correct answer.
I hope this helps!
~kaikers