anonymous
  • anonymous
Ok i have 10 questions i have answered and i want to know if the answer i put is correct. PLLLLEEEEAASEEE help? (: Here is the first one: The equation, y = 12841(1.01)x , represents the average cost of an education at a private college, after 1990. What is the average cost in 1990 (x = 0)? A. $12,969 B. $12,841 C. $13,122 D. $13,099 my answer was B. Correct or incorrect?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Is that supposed to be \[12,841*(1.01)^{x}\]?
anonymous
  • anonymous
yea sorry typo ^^
anonymous
  • anonymous
Just checking. Since something raised to the 0 power is 1, you have 12,841*1, so yes, I agree with answer B.

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anonymous
  • anonymous
Woo! thanks (: ok next one is : Using the equation, y = 12841(1.01)x, predict the cost of an education in a private college in the year 2010. Use x = 20 as this is 20 years after 1990. Round to the nearest year. A. $14,908 B. $20,628 C. $15,668 D. $19,652 i put C correct? or Incorrect? lol
anonymous
  • anonymous
Yep.
anonymous
  • anonymous
Okie dokie next : Using the equation, y = 20,000(0.95)x, predict the purchasing power of $20,000 ten years later. A. $14,560 B. $10,255 C. $11,975 D. $12,635 i put C again (: rite? or wrong? (:
anonymous
  • anonymous
Yep, C again.

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