Question

I need help with 10 and 12

Answer 1

Answer:

  10.  b

  11.  c

  12.  b

Step-by-step explanation:

10. You have appropriately eliminated choices (a) and (d). To choose between (b) and (c), evaluate the function at x=1:

  f(1) = 2·2¹ = 4

Only choice B has the graph going through the point (1, 4).

__

11. Your subtraction is incorrect for -8 -(-2). The appropriate sum is -6, so the appropriate choice is C. (The coefficient of w in choice D should also give you a clue that something is wrong.)

__

12. The greatest common factor is 9c³d², so choices C and D can be eliminated immediately. Choice A has the coefficient of 54 on the wrong term, so it, too, can be eliminated. The appropriate factorization is shown in choice B.