Step-by-step explanation:
1. simple interest
I= p × r × t
I = 1050 × 4.5 × 2
I = $9450
2. principal
p = I/(rt)
p= 22.50/ (3× 3)
p = 22.50/9
p = $2.5
3. simple interest
I= p × r × t
I = 500 × 5 × 3
I = $7500
4. time
first convert r to decimal
r= r/100, r= 3.5 / 100
r= 0.035
t = i/(pr)
t = 43.75/ (2500× 0.035)
t = 43.75/ 87.5
t = 0.5 year or 6 months
The y-intercept is the point that crosses on the y-axis
In this case the y-intercept or B is -1
Answer:
Step-by-step explanation:
I am not sure if you wanted to ask this
f(x) = 6^x becomes g(x)= (6^x ) -9 so it went DOWN 9 units
or this
f(x) = 6^x becomes g(x)= 6^(x -9) so it went RIGHT 9 units
(x-70) + (x-70) + 90 +90
2x-140+180
I'm not sure on the properties though...I hope I was able to help
Answer:
"f(x) = (x + 3)(x – 7)"
Step-by-step explanation:
If the vertex is (h,k), then the quadratic is can be written in the form:
y = a (x-h)^2 + k
So it will be:
y = a(x-2)^2 - 25
Now, to find a, we need the x-intercept (which is 7), so we plug in 7 into x and 0 into y and solve for a:
0 = a(7-2)^2 - 25
0 = a(5)^2 - 25
0 = 25a - 25
a = 1
THus, we can write:
y = (x-2)^2 - 25
Expanding this, we get:
y = x^2 -4x + 4 - 25
y = x^2 - 4x - 21
y = (x-7)(x+3)
THis is correct answer.