Please help me with this

Mathematics

2 answers:

Eddi Din [679]3 years ago

5 0

Answer:

B.-21

C. -3a^2+2a

Step-by-step explanation:

You replace the value in the parentheses for the x:s in the function. For part b you do 3 squared (9) times -3 which is -27. Then you substitute 3 for x in the next term, 2x which gives you 6. Adding -27 and 6 you get -21. Follow the same reasoning for part c and you get a squared times -3 and add to that 3a since you change out the x for the a.

Andreas93 [3]3 years ago

5 0

Answer:

Step-by-step explanation:

f times 3 equals 3f so 3f will be the answer.

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