calculus

After x weeks of prcatice, a student can type f(x)=80(1-e^-0.3x)words a minute. How sooon will the student be able to type 60 words per minute? (Round to the nearest tenth)

  1. 👍 0
  2. 👎 0
  3. 👁 225
  1. 60=80(1-e-.3x)
    3/5=1-e^-.3x)

    2/5=e^-.3x

    ln (2/5)=-3.x

    Surely you can solve it from here. This is hardly calculus.

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Jack typed 80 words per minute when he enrolled in a typing course. His typing speed increased by 3% two weeks into the course. At the end of the course, Jack was able to type his entire 1,680 word document in 20 minutes. What was

    asked by vin on May 18, 2016
  2. Technology

    How mis typing speed measured? In characters per second In characters per minute In words per minute •• In words per second What is special about F and J keys on a standard keyboard? They have bumps They are in the exact

    asked by Livy on August 31, 2016
  3. M

    In printing an article of 21,000 words, a printer decides to use two sizes of type. Using the larger type, a printed page contains 1,200 words. Using the small type, a page contains 1,500worda. The article is alloted 16 full pages

    asked by Anonymous on July 23, 2014
  4. MATH CHECK ANSWERS

    CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9?

    asked by zoey on January 27, 2014
  1. math

    A student studying for a vocabulary test knows the meanings of 12 words from a list of 26 words. If the test contains 10 words from the study list, what is the probability that at least 8 of the words on the test are words that

    asked by titi on June 26, 2017
  2. maths

    In printing an article of 30,000 words a printer decides to use two sizes of type. Using the larger type, a printed page contains 1,200 words. Using the smaller type, a page contains 1,500 words. The article is allotted 22 pages

    asked by asfa on September 2, 2013
  3. Math

    Joe can type 11 words in 8 secs. at this rate, how many words can he type in two minutes ?

    asked by Jul on July 7, 2015
  4. Math

    The average student enrolled in the 20-wk Court Reporting I course at the American Institute of Court Reporting progresses according to the rule below where 0 t 20, and N'(t) measures the rate of change in the number of

    asked by Vanessa on April 9, 2014
  1. Math

    In printing an article of 30,000 words, aprinter decided to use two sized of type. Using the larger type, a printed page contains 1,200 words. Using the smaller type, a page contains 1,500 words. The article is allotted 22 pages

    asked by Jennifer on April 25, 2012
  2. math

    A court reporter operates an electronic typewriter at 60 words per minute and a word processor at 70 words per minute. When using a typewriter, the reporter makes errors in 2% of the words, and when using a word processor, the

    asked by Anonymous on August 7, 2019
  3. science help plzzz

    Multiple Choice 1. Which of the following images shows a living organism interacting with a biotic factor in its environment? (1 point) bird drinking water koala eating leaves plant in the Earth whale in the ocean 2. Which of the

    asked by josh on November 7, 2013
  4. precalc

    Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge that a person retains after t weeks. The formula is p = (100 – a)e-bt + a, where a and b vary from

    asked by Anonymous on August 31, 2010

You can view more similar questions or ask a new question.