The telephone company offers two billing plans for local calls. Plan 1 charges $27 per month for unlimited calls and Plan 2 cha
rges $11 per month plus $0.05 per call. A. Use an inequality to find the number of monthly calls for which Plan 1 is more economical than Plan 2.
1 answer:
Answer:
<h2>0.05x+11<27 for x<=320</h2>
Step-by-step explanation:
Step one:
Plan 1
charges = $27 monthly
the total charges is expressed as
y=27------1
Plan 2
charges= $11 monthly
extral= $0.05 per call
let x be the number of calls
the total is expressed linearly as
y=0.05x+11--------2
Step two:
equating 12 and 2 we have
27=0.05x+11
collect like terms
27-11=0.05x
16=0.05x
divide both sides by 0.05
x=16/0.05
x=320
the inequality for which plan A is more economical is
0.05x+11<27 for x<=320
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