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Aleks04 [339]
3 years ago
8

The annual household cost of telephone service in the US increased at a relatively constant rate of $27.80 per year from 1981 to

2001. in 2001 the annual household cost of telephone service was $914.
a: what was the annual household cost of telephone service in 1981?
b: write an equation that gives the annual household cost of telephone service as a function of the number of years since 1981.
c: find the household cost of telephone service 2000
Mathematics
1 answer:
Serjik [45]3 years ago
3 0
B: 914-20(27.80)=X, multiply: 20(27.80)=556, 914-556=$358 :A.

C: 914-27.80=$886.20 :)
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