Avery has a total of $12.50 in her piggy bank at home. each week she takes out $1.25 to ride the city bus. write an equation representing the balance, c, in the piggy bank, where w is the number of weeks.
a) c = 1.25w – 12.50
b) c = 1.25w + 12.50
c) c = –1.25w + 12.50
d) c = –1.25w – 12.50

For this case we have a function of the form:

Where,

We have then that Avery has a total of $ 12.50 in her piggy bank at home:

Each week she takes out $ 1.25 to ride the city bus:

Substituting values we have:

an equation representing the balance, C, in the piggy bank, where w is the number of weeks is:

Option C

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40