Answer:
Q:4A ($30) * 0.85 = $25.50
Q:4B ($18) * 0.85 = $15.30
Q:4C ($24.80) * 0.85 = $21.08
Q5:
(For six pack): $2.10 (each) * 8 = $16.80
(For eight pack): 3.12 (each) * 6 = $18.72
8 of the 6 packs would be the better deal.
Q6 (A): Elena is 142.24 cm tall.
(Formula is multiply the inches by 2.54. So, 56 times 2.54 is 142.24)
Q6 (B): Elena is 1.4224 meters tall.
(Formula is divide inches by 39.37. So, 56 divided by 39.37 is 1.4224)