Question

A hardware store sells hammers for $8.29 each and boxes of nails for $4.99 each. A convenience store sells the same hammer for $6.79 each and the same box of nails for $5.49 each. Matrix C, shown below, represents the prices of a hammer and a box of nails at the two stores.



C
=
[
8
.
29
4
.
99
6
.
79
5
.
49
]



The two stores are located in a county with an 8% sales tax. The matrix C', shown below, represents the costs of a hammer and a box of nails at the two stores including sales tax, where p, q, r, and s are values in dollars.



C
'
=
1
.
08
[
8
.
29
4
.
99
6
.
79
5
.
49
]
=
[
p
q
r
s
]



Complete the table with the values of p, q, r, and s to the nearest hundredth.



Entry Value

p

q

r

s

Answer 1

p = $8.95
q = $5.39
r = $7.33
s = $5.93