One card costs $
z. One stapler costs $(
z + 15). One guide book costs $4
z.
- Glen bought 3 cards, 3 staplers and 1 guide book. How much did he spend? Simplify your answer in terms of z.
- If z = 8, how much did Glen spend altogether?
(a)
Cost of 3 cards = 3 x
z = $3
z Cost of 3 staplers = 3 x (
z + 15) = $(3
z + 45)
Cost of 1 guide book = $4
z Total amount that he spent
= 3
z + 3
z + 45 + 4
z= 3
z + 3
z + 4
z + 45
= $(10
z + 45)
(b)
If
z = 8,
total amount that he spent
= 10
z + 45
= (10 x 8) + 45
= 80 + 45
= $125
Answer(s): (a) $(10
z + 45) or $(45 + 10
z); (b) $125