The bureau of labor statistics reported the consumer price index as 211.4 in december 2007, and 231.1 in december 2012. by what percentage did the index increase from the end of 2007 to the end of 2012 (rounded to one decimal place)? a. 0.093% b. 9.0% c. 9.3% d. 19.7%

The first step to determine the percentage of increase is to compute for the difference of consumer price index in value.

231.11 (consumer price index for 2012) – 211.4 (consumer price index for 2007) = 19.71 (increase)

To compute for the percentage of increase, you need to compare the increase to the consumer price index for 2007.

19.71/211.4 = 9.3% increase

the answer is d. 75%

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt