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DochEvi [55]
3 years ago
10

Simplify the expressions -8(5r+6)+9(6r+3)

Mathematics
1 answer:
nirvana33 [79]3 years ago
7 0
<span>-8(5r+6)+9(6r+3)
= -40r - 48 + 54r + 27
= 14r - 21</span>
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 Find the following when a = -2, b = 3, c = -1/3
fomenos
Maybe try
<span><span><span><span>f(x) = 7 − 3x
(a) 
f(a) 
Incorrect: Your answer is incorrect. 
(b) 
f(−a) 


(c) 
−f(a) 


(d) 
f(a + h) 


(e) 
f(a) + f(h) 


(f) 
f(a + h) − f(a)
h
, if h ≠ 0 </span>
(Scroll Down for Answer!)</span><span>OR get immediate PAID help on:</span></span><span>Answer by </span>stanbon(72140)   (Show Source):You can put this solution on YOUR website!
<span>If a and h are real numbers, find the following values for the given function.
f(x) = 7 − 3x
(a) 
f(a) = 7-3a
------------------------
(b) 
f(−a) = 7-3(-a) = 7+3a
------------------------
(c) 
−f(a) = -(7-3a) = 3a-7
------------------------
(d) 

f(a + h) = 7 -3(a+h) = 7-3a-3h
------------------------
(e) 
f(a) + f(h) = (7-3a)+(7-3h) = 14-3a-3h
------------------------
(f)
if h ≠ 0,

[f(a + h) − f(a)]/h = {[7-3a-3h]-[7-3a]}/h = [-3h]/h = -</span></span>
6 0
3 years ago
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