Use the tables to evaluate the expression if possible. 23) Find (f+9)(-5). 51-31

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Use the tables to evaluate the expression if possible. 23) Find (f+9)(-5). 51-31 7 A)-12 B)-11 D) 14 24) Find (g )(13). XI 9 11 | 13 121 | 169 | 100 | 81 | 144 gco 108 156 87 68131 A) 108 B) 134 D) 156 25) Find (g (9). ?9112|10|20 11 1201 9 10 A) 19 B) 49 C) 17 Determine whether ( g)(x) x and whether (g (x) x A) Yes, yes B) No, yes C) No. no D) Yes, no Determine the difference quotient f(x h f(x (h 0) for the function f Simplify completely. 27) f(x) 7x-12 D) 12 A)-7h 28) f(x) 8x2+5x-13 A) 16xh+5h+5h2 B) 8x +6+16h C) 16x 5+8h D) 16x+ 5 olve the problem. 29) Regrind, Inc. regrinds used typewriter platens. The cost to buy back each used platen is $2.00.T fixed cost to run the grinding machine is $216 per day. If the company sells the reground platen D) 36 platens 6.00, how many must be reground daily to break even? A) 108 platens B) 27 platens C) 54 platens 30) Midtown Delivery Service delivers packages which cost $1.80 per package to delver. The fred how many to run the delivery truck is $144 per day. If the company charges $4.80 per package

Explanation / Answer

23)
(f+g)(-5) = f(-5) + g(-5)
= -5 + (-7)
=-12
Answer: A

24)
(gof)13 = g(f(13))
= g(169)
= 156
Answer: d

25)
(gof)(9) = g(f(9))
= g(10)
= 19
Answer: A

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