Answer:
1. k^2+2k-24
1A. (k - 4) (k + 6)
2. 4k^2-1
2A. (2k + 1) (2k - 1)
3. 25b^2-30b+9
3A. (5b - 3)^2
4. x^2+11x+28=0
4A. x = (-4) OR (-7)
5. (3a+8)(3a^2-a-7)
5A. 9a^2 + 21a^2 - 29a - 56
Step-by-step explanation:
1. k^2+2k-24
Factor using the AC factoring method.
k^2 = 2k
2k + 2k - 24
(k - 4) (k +6)
2. 4k^2-1
Use the Difference of Squares Formula: a^2 - b^2 = (a + b)(a - b)
2k = a
1 = b
(2k + 1)(2k - 1)
3. 25b^2-30b+9
Use the perfect square rule
(5b - 3)(5b - 3)
(5b - 3)^2
4. x^2+11x+28=0
Factor, by setting each factor equal to 0
x^2+11x+28=0
(x + 4)(x + 7) = 0
x = (-4) OR (-7)
5. (3a+8)(3a^2-a-7)
Simply, multiply each term in the first expression by each term in the second expression, and then simplify.
(3a+8)(3a^2-a-7)
9a^2 + 21a^2 - 29a - 56
The amount in the account after the daily deposit for 5 days is $5
<h3>How to determine the amount in the account?</h3>
The given parameters i the question are represented as follows
Initial balance = -$30
Daily deposit = $7
Number of days of deposit = 5
The equation that represents the amount in the account is represented as
Amount = Initial balance + Daily deposit * Number of days
Substitute the known values in the above equation So, we have the following equation
Amount = -30 + 7 * 5
Evaluate
Amount = 5
Hence, the amount is $5
Read more about linear equations at
brainly.com/question/4074386
#SPJ1
Answer: 4
Step-by-step explanation:
I don’t have any graph paper but on 2x draw a line from the very right to the very left and shade the entire left side. And then on -3 draw a line from the very top to the very bottom and shade the top part. Unless you don’t shade it then don’t do that but that’s what you have to do
