Answer:
The answer is 18
Step-by-step explanation:
12x+10-5x
12x-5x+10 ( combine like terms)
12x-5x= 7x
Answer: 7x+10
F(-3)=-8(-3)^2 (take out the parenthesis and the negative because you can’t do the exponent of a negative number)
F(-3)= -8•3^2 (now you can do the exponent of 3)
F(-3)= -8•9 (multiply)
F(-3)= -72 this is your answer.
Hope this helps :D