Amtrak's annual passenger revenue for the years 1985−19951985-1995 is modeled approximately by the formula R=−60|x−11|+962 where RR is the annual revenue in millions of dollars and xx is the number of years after 19801980. In what year was the passenger revenue $722$722 million? In the years  and , the passenger revenue was $722 million.

Q: The value of your stock investment decreased by 35% after a stock market crash. What percentage…

A: The percent increase or decrease is calculated using the formula: % increase or decrease=Final…

Q: a computer that cost $2500 in 2015 depreciated at a rate of %30 per year. How much will the computer…

A:

Q: If a student's weighted grade point average is 75.2 and ∑tiXi = 1504 in the spring semester, how…

A: Given,If a student's weighted grade point average is 75.2and ∑tiXi = 1504

Q: The 2000 population of Jacksonville, FL was 736,000 and was increasing at a rate of 1.49% each year.…

A:

Q: Tacoma's population in 2000 was about 200 thousand, and has been growing by about 8% each year. If…

A: It is given that , Tacoma's population in 2000 was about 200,000 & has been growing by about 8 %…

Q: Tacoma's population in 2000 was about 200 thousand, and has been growing by about 8% each year. If…

A:

Q: grade

A: The answer is given below :

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A: Given, Batting average=0.4727272 Attempts=55

Q: In 2019 there were 446,479 births in California and California had a population of 39,512,223. (a)…

A: a) 1 year = 365 days.

Q: Tacoma's population in 2000 was about 200 thousand, and has been growing by 8% each year. If this…

A: Given : Population at the beginning of 2000 was 200,000. There is a compounding effect in the growth…

Q: 1 If x+-=7, what is x+

A:

Q: In 2011, Americans spent an average of 13.6 % of their monthly earnings on mortgage payments, which…

A: Let x be the average monthly earnings of an American. Assuming this monthly average is same for the…

Q: Gary bought a house in 1962 for $73,442 and sold it in 2001. (a) If the 1962 CPI is 30.9 and the…

A: Given, The price of house=$73,442 Part(a): The worth of the house is,

Q: The average American house cost $243,000 in 2010 and the cost in 2019 is $315,000 What is the…

A:

Q: An endangered species has a population of 1,000,000 alive right now. This is only 0.3% of its peak…

A:

Q: Suppose the value of a car V is related to the number of years since its purchase by the formula V =…

A: Here the value of car  is given V = 25000-2100n After 5 year then n = 5

Q: If I have a 89.71% in my class and a quiz is worth 5% of my grade, how much will my grade drop if I…

A: Given: The percentage obtained in class=89.71% Total grade for quiz=5% The grade obtained in quiz=0

Q: [$3.50 × [1 + (– .122)]]/[.14 – (– .122)] = ?

A:

Q: A man owns stock valued at $2100. One day the stock drops by 7%, and then gains the same percentage…

A:

Q: Tacoma's population in 2000 was about 200 thousand, and has been growing by about 8% each year. If…

A:

Q: the average annual cost of college at 4 year private college was $29,056 in the 2012-2013 academic…

A: Given average annual cost of college at 4 year private college is $ 29,056 in academic year…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.