Question

Help pls its urgent!

Answer 1

pls help

Answer 2

dont RUSH ME!

Answer 3

first solve for c (y-intercept)

y = mx + c
28 = -0.15 (20) + c
c = ?

Answer 4

this is what u got so far, u have a slope and a point on the line

Answer 5

is 31?

Answer 6

yep

Answer 7

so that was the initial credit in $
so what does that equal in minutes (x)?

Answer 8

okay um how do i do this.

Answer 9

do you know to get equation of lines from slope and a point given

Answer 10

y = mx + c
c = 31
m=-.15
y=0

Answer 11

okay one sec

Answer 12

so 0=-.15(x)+31?

Answer 13

yep, so what does x =?

Answer 14

206.6666 lol thats what i get after 31=-.15x

Answer 15

yep, thats how many minutes of calls you can make before your balance drops to 0
now, when x = 7, what does y =?

Answer 16

29.95

Answer 17

perfect, there's your answer

Answer 18

why 7 though?

Answer 19

the q states (after 7 minutes of calls) so x = 7
and (what is your balance?) so must be between $31(x=0) and $28 (x=20)

Answer 20

just want to see how pls :D thanks for the other help though

Answer 21

oh right my bad

Answer 22

thanks man!

Answer 23

aw, you got it?
cool, welcome