During a six month period, the cost of a bag of sugar, s increased and decreased at different times. The highest cost for a bag of sugar is s increased by 45% and the lowest cost of a bag of sugar is s decreased by 45%. Which expressions represent the correct description of the meaning in context when s is increased by 45%.
1.45s
0.45s
s+45s
s+0.45s
1.00s+0.45s
s-.45s