Answer: f(n) = 0.9 × f(n − 1) + 10, f(0) = 175, n > 0
Step-by-step explanation:
Given: A store had 175 cell phones in the month of January.
Every month, 10% of the cell phones were sold and 10 new cell phones were stocked in the store.
Let n be the number of months
Then when n=0
f(0)=175
After first month , n=1
The number of cell phone in store=
Thus 
Similarly we can do till n months, we get
f(n)=0.9×f(n−1)+10, f(0) = 175, n > 0
Given:
To find:
The steps to prove the given statement by using the properties of multiplication.
Solution:
We have,
Taking left hand side, we get
(Associative property of multiplication)
Hence proved.
Boundary lines are dotted whenever the sign is strictly greater than or less than.
The only reason a line is not dashed would be that it would be equal to. A quick way to remember this would be that the extra line provided to make it equal would fill in the blanks. Hope this tip helps you, helped me ace many tests!
According to Vieta's formula, if
are solutions of quadratic equation
, then:
In our case:
Answer:
It's Both
Step-by-step explanation:
for the first two co-ordinates, there are many y-value for a single x-value, then for the last two co-ordinates theres a single y-value for one x-value
