100 - 0.05 = 0.95
Expected monthly cost =
Monthly cost x 0.95 + office visit x 0.05
15 x 0.95 + 50 x 0.05
14.25 + 2.50 = $16.75
This polynomial does not factor so you have to complete the square or use Quadratic formula.
x^2 + 6x + 7 = 0
Using completing the square, subtract 7 from both sides.
x^2 + 6x = -7
divide 6 by 2 = 3, square 3 = 9, add 9 to both sides.
x^2 + 6x + 9 = 2
(x + 3)^2 = 2
Take the sqrt of both sides
x + 3 = + - sqrt 2
subtract 3 from both sides
x = - 3 + - sqrt 2
This is not an answer choice but it is the correct answer. You either typed the choices incorrectly or the equation incorrectly.
I think (jk) (x) means j times k
(jk) (x) = -7x(9 - 2x) //Using Distributive Property.
(jk) (x) = -63x + 14x^2 = 14x^2 - 63
//Hope it helps.
Answer:
The answer is option 2.
Step-by-step explanation:
Firstly, you must factorize the possible expressions :
Next you have to divide by converting to multiplication :
Lastly, you can cut out the similar expressions :
The dependent variable would be b (affected by the change of n) and the independent variable would be n (affects b). The equation would be
b = 12n.
