Exam 3: Numbers in the Real World

Use the Consumer Price Index below to answer the question. Average Annual Consumer Price Index (1982-1984 = 100) Year CPI Year CPI Year CPI 1986 109.6 1995 152.4 2004 188.9 1987 113.6 1996 156.9 2005 195.3 1988 118.3 1997 160.5 2006 201.6 1989 124.0 1998 163.0 2007 207.3 1990 130.7 1999 166.6 2008 215.3 1991 136.2 2000 172.2 2009 214.5 1992 140.3 2001 177.1 2010 218.1 1993 144.5 2002 179.9 2011 224.9 1994 148.2 2003 184.0 2012 229.6 -Suppose you needed $56,000 to maintain a particular standard of living in 2000. How much would you have needed in 1990 to maintain the same standard of living?

Decide whether the statement is believable, given the precision with which it is stated. -Last year, the company made $199.2 in profits.

Use the appropriate rounding rule to answer the question with the correct precision or correct number of significantdigits. -A city has a deficit of $31.4 million. How much is this per person if the population of the city is 263,300?

Write as a percent. - $\frac { 1 } { 2 }$

State the number of significant digits and the implied precision of the given number. -7000.010

Carry out the indicated operation and give your answer with the specified number of significant digits. - $1323 \times 51.16 ; 2$ significant digits

Use the appropriate rounding rule to answer the question with the correct precision or correct number of significantdigits. -Subtract the weight 3.2 lb from 279 lb.

Answer the question. -In 2000 a company increased its workforce by 60%. In 2001 it decreased its workforce by 60%. How does the size of its workforce at the end of 2001 compare with the size of the workforce at the Beginning of 2000?

Answer the question. -Which of the statements below suggests an appropriate level of precision?

Write as a percent. -0.00696

Find the absolute and relative errors. -Your credit card applies a finance charge of $31.36. The finance charge should have been $29.69.

Solve for the percentage in the problem. Round to the nearest tenth of a percent. -_ $\%$ of 3209 sales is 15 sales.

Write the percentage as a fraction or decimal, as indicated. -Write as a fraction. 800%

Determine whether the statement makes sense. If the statement is possible then it makes sense. If it is clearly impossible,it does not make sense. -It would take me about $1 \times 10 ^ { 6 }$ seconds to walk across the United States (from New York to California).

Use the Consumer Price Index below to answer the question. Average Annual Consumer Price Index (1982-1984 = 100) Year CPI Year CPI Year CPI 1986 109.6 1995 152.4 2004 188.9 1987 113.6 1996 156.9 2005 195.3 1988 118.3 1997 160.5 2006 201.6 1989 124.0 1998 163.0 2007 207.3 1990 130.7 1999 166.6 2008 215.3 1991 136.2 2000 172.2 2009 214.5 1992 140.3 2001 177.1 2010 218.1 1993 144.5 2002 179.9 2011 224.9 1994 148.2 2003 184.0 2012 229.6 -The table below shows the federal hourly minimum wage in various years. Year Minimum wage 1990 \ 3.50 1991 \ 4.25 1996 \ 4.75 1997 \ 5.15 What was the relative change in the minimum wage from 1990 to 1997? How does this compare to the overall rate of inflation as measured by the CPI? In which of those two years was the purchasing power of the minimum wage higher?

Determine by what factor the numbers differ. In other words, determine how many times larger the first number is thanthe second. -1 trillion, 1 hundred

State the number of significant digits and the implied precision of the given number. -6.00000963 minutes

Solve for the percentage in the problem. Round to the nearest tenth of a percent. - $\$ 953$ is _ \% of $\$ 1717 .$

Solve the problem. -The retail cost of a computer is 22% more than its wholesale cost. Determine which of the statement's below is true.

Two measurements are given. Find the absolute difference and then find the relative difference as a percentage. Assumethat the first quantity is the compared value and the second quantity is the reference value. Round answers to the nearesttenth if necessary. -In Jose's hometown, there are 243,000 people whose first language is English and 99,000 whose first language is Spanish .