Answer:
- rate of change: $8 per hour; the per-hour rental charge
- initial value: $75; the deposit on the machine
Step-by-step explanation:
The cost to rent the machine is given as ...
total cost = deposit + ($8 /hour)×(number of hours)
The cost for 5 hours is given ans $115, so we have ...
115 = deposit + 8(5)
75 = deposit . . . . . . . . subtract 40
__
The "rate of change" is given as $8 per hour, the hourly rental charge.
The "initial value" is called <em>the deposit</em>. It is found to be $75.
Y=3(x+1)^2-4
You have to find the vertex in order to write the formula. The vertex is (-1,4).
A is the ans , like they are actually the same equation
Answer: 13
Step-by-step explanation:
If you remember the quadratic equation formula;
You can easily extract what is under the root to find the discriminant.
a = 3
b = 7
c = 3
A difference of squares must be a binomial, so we want two terms. This rules out the third and fourth options.
If we look at the first two, we must check that both terms are perfect squares.
Look at the first one: 
is a perfect square (it's 
), but 
is not a perfect square, because 10 is not a perfect square.
On the other hand, if we look at the second option, 
is the square of 
, and 
is clearly the square of 
. So, this is the difference of two squares.
