ElectricPavlov

Then    y = ( x +3) ( x+15)    is the paraboa      expand ...

AD lies on AB    AB is only 13    so  AD cannot be 17   ....the other similar question a few down the list from this states AD = 10

https://web2.0calc.com/questions/inequality_126

16  +  9   + 5    -  5  = 20 own a cat  OR a dog

 y = mx + b      find m = slope = (y1-y2) / (x1-x2)  

then use this value of m  in the equation with either of the points substituted for x and y to calculate the vlue of 'b'

sum =1448= 32/ 2 ( a1 + a32)

     a1 + a32 = 90.5

a1 = 18 - 4d       a 32 = 18 + 27d

18-4d    +   18 + 27d = 90.5

d = 2.3695652

18 + 4d = a9 = 27.478

I think there is a limit to the number of postings a given user (IP address) can make......if you have a VPN, try connecting through a different server.

(1 + .016)²⁰  = 1.3736     which is a   37.36 % increase

Manipulte into vertex form of a parabola

3y=2x^2+16x+28

3/2 y = x^2 + 8x + 14

        =  (x+4)^2 - 2

y = 2/3 (x+4)^2 - 4/3         vertex is then -4,  - 4/3      added = - 5 1/3

Corrected....sometimes the numbers 'triple'

Brandon is an amateur marksman. When he takes aim at a particular target on the shooting range, there is a 0.10. probability that he will hit it. One day, Brandon decides to attempt to hit 10 such targets in a row.

Assuming that Brandon is equally likely to hit each of the 101010 targets, what is the probability that he will hit at least one of them?