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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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7 0
2 years ago
1 point
galina1969 [7]

Answer:

(B) 20

Step-by-step explanation:

Let small puppet be represented by-----------------s

Let large puppet be represented by-----------------l

Total number of puppets expression will be: s+l =25---------a

The expression for total costs will be : 1$ s + $2l=$30-------b

Equation a can be written as; s= 25-l ------------c

Use equation c in equation b as

$1( 25-l )+$ 2l = $30

25-l + 2l = 30

25+l =30

l= 30-25 =5

l, large puppets = 5

s, small puppets = 25-5 = 20

Answer choice A is incorrect because 25 is the total number of all puppets

Answer choice C and D are incorrect because the numbers are less that that of small puppets.

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3 years ago
A cab company charges a $1 boarding fee and a meter rate of $11 per mile. The equation is y = 11x + 1 where x represents the num
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I think the answer is $56
4 0
2 years ago
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Which ordered pair (r, s) is the solution to the given system of equations?
SSSSS [86.1K]

Answer:

(8,3)

Step-by-step explanation:

Edge 2020 hope this helps =)

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2 years ago
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castortr0y [4]
Y = ax + b;

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y = 0.40x + 0.09 => 0.40x - y + 0.09 = 0 is the linear equation.
4 0
2 years ago
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