R(x) is a polynomial. Thus, the domain is the same as the range.
Domain = range = ALL REAL NUMBERS.
We can also express the answer as
(-infinity, infinity).
Answer: 
Step-by-step explanation:
-7+5 times -1+9
−7+5×−1+9
-7-5+9
−7−5+9
-12+9
−12+9
−3
Answer:
f(-7) = 157
Step-by-step explanation:
3x² + 10
3(-7)² + 10
3(49) + 10
147 + 10
157
<em>good luck, i hope this helps :)</em>
In an hour the distance will be 27+3=30 miles
27*x+3*x=41
30*x= 41
x= 41/30 hours
x= 1,3(6) hours