Question 1152945: A telephone calling card charges a connection fee,plus a charge per minute. A 5-minute call cost $2.98. A 15-minute call costs $7.18. What is the cost of the connection fee?
2, find the solution:
y=3/5x+7
y=3/5x-1
A infinitely many solutions
B 0
c.8
d. no solution
3. which equator represents a linear function?
a. y=1/x
b. y=2x-3
c.y=5x^3+8
d.y=x^2x+1
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39615)   (Show Source):
You can put this solution on YOUR website! --------------------------------------------------------------
A telephone calling card charges a connection fee,plus a charge per minute. A 5-minute call cost $2.98. A 15-minute call costs $7.18. What is the cost of the connection fee?
2, find the solution:
--------------------------------------------------------------
y=mx+b
Points as (x,y)
b, connection fee
m, the per minute price
points given are (5,2.98) and (15,7.18).
You could use b=y-mx, pick either of the given points for x and y, and use  .
.
.
Answer by ikleyn(52771)  (Show Source):
You can put this solution on YOUR website! .
I am a well-wisher,
and I wish you NEVER post more than one problem/question per post.
It is a general RULE, a POLICY and a requirement of this forum,
and those who violates it, work AGAINST their own interests.
Posting a unique single question is the ONLY WAY to get a QUALIFIED answer.
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