Answer:
B) f(x) = 3x² - 2x + 5
Step-by-step explanation:
To find the correct quadratic function that represents the table, you must substitute [x] into the quadratic function.
A) f(x) = 3x² + 2x - 5
B) f(x) = 3x² - 2x + 5
C) f(x) = 2x² + 3x - 5
D) f(x) = 2x² - 2x + 5
A. 3(-2)² + 2(-2) - 5 =
3(4) - 4 - 5
12 - 4 - 5
12 - 9
= 3
B. 3(-2)² - 2(-2) + 5 =
3(4) + 4 + 5
12 + 9
= 21
C. 2(-2)² + 3(-2) -5 =
2(4) - 6 - 5
8 - 11
= - 3
D. 2(-2)² + 2(-2) + 5 =
2(4) - 4 + 5
8 - 4 + 5
8 + 1
= 9
Your correct answer is: B
Let
x ----> amount deposited at 4.5%
y ----> amount deposited at 5%
we have that
y=2x----> equation A
4.5%=0.045
5%=0.05
so
0.045x+0.05y=1,595 ----> equation B
solve the system
substitute equation A in equation B
0.045(x)+0.05(2x)=1,595
solve for x
0.045x+0.10x=1,595
0.145x=1,595
x=11,000
Find y
y=2(11,000)=22,000
<h2>The amount deposited at 4.5% was $11,000 and the amount deposited at 5% was $22,000</h2>
Answer:
Around 80 of the people will go to the party.
Step-by-step explanation:
If you divide 98 by 100, you find out that 1% of 98 is .98. So after that you multiply that by 82, and the answer is 82% of 98.
Answer:
x = 1
Y = 1
Step-by-step explanation:
A. 3(2x-3y= - 1)
6x-9y=- 3
B. -2(3x-4y= - 1)
- 6x+8y=2
Add both equations:
(6x-9y= - 3) + (- 6x+8y=2)
-y= - 1
3x - 4(1) = - 1
3x-4= - 1
3x = 4 - 1
= 3/3 = 1
