Omg plz help with this question
also this question is a bit diffucult- will i need to plug in some number in for x to figure out which answer choice is correct?
+37153 First equation gives the input RATE.....second equation gives the output RATE
first equation - second equation = net input rate (like how much is filling the tub)
(3) will tell you the NET RATE of tank filling at 3 hr
3(3^2)+2 - (4(3)-1 )=
29 - 11 = 18 After 3 hours THE FILLING RATE is 18 gallons/hr
+37153 When debt = 0 f(x) = 0
0 = -4x^2+10x+60 Solve for x
I used quadratic formula
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) with a = -4 b = 10 c = 60 to find x = -2.82 and 5.32 (throw out the negative) 5.3 years
Ok thx, & you said the answer for the second question is 5.3?
+37153 Sorry...I misread the question and edited my answer...... third choice
+129849 ( i - d)(3) is the rate at which the volume of liquid is changhing at 3 hrs....to find this we have
[ 3(3)^2 + 2 ] - [ 4(3) - 1 ] =
[ 27 + 2 ] - [11[ =
29 - 11 =
18 gal per hour (third answer )
Next one
We want to find when the debt = 0 .....so.....
-4x^2 + 10x + 60 = 0 divide through by - 2
2x ^2 - 5x - 30 = 0
The graph here shows that the company will get out of debt after about 5.3 years
https://www.desmos.com/calculator/rtundu47as
