I figured out the first question, the second one in lost on.
Factor both of the equations, numerator and denominator
Cancel the like factors *excuse the zero im just showing you*
Combine frunctions
x-9=0
x+7=0
Restrictions are 9 and -7
C
Using Descartes' rule of signs
look for the number of sign changes in f(x)
+ / + / - / -
There is 1 sign change hence 1 positive zero
f(-x) = -x³ + x² + 8x - 8
look for the number of sign changes in f(- x)
- / + / + / -
there are 2 sign changes hence 2 possible negative zeros
Answer:
Tn = 17-6n
Step-by-step explanation:
d = 5-11 = -6
Tn = a + (n-1)d = 11 + (n-1)×-6
= 11 -6n +6 = 17-6n
A: to find rate of change you take the smallest rate:
2 bushels/$15 and divide both by 2 so that you get 1 bushel and $15/2=$7.5, therefor 1 bushel/$7.50.
B:The current year is at 2 bushels/$16 or 1 bushel/$8, which is $.50 more than the previous year.
-2x-11 because you distribute the negative to everything in the parentheses and then combine like terms
