subject
Mathematics, 08.02.2022 18:50 nickname9154

3) Every year Sully buys 130 red pens for grading at the beginning of the year. He figures that the number of pens decreases exponentially at about 9% each week. When he only has 10 left he goes and buys more.
a) Set up an exponential equation for the given situation.
b) Rewrite the equation as a logarithm.
c) Expand your logarithm using Properties of Logarithms.
d) How many weeks until Mr. Sullivan needs to buy more pens?

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 18:00
The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.
Answers: 1
question
Mathematics, 21.06.2019 22:20
As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is
Answers: 2
question
Mathematics, 22.06.2019 01:30
A23 – year – old male buys 100/300/100 liability insurance, collision insurance with a $100 deductible, and comprehensive insurance with a $250 deductible? what is his total annual premium? (a) $1142.00 (b) $1765.45 (c) $1770.10 (d) $1785.25
Answers: 2
question
Mathematics, 22.06.2019 02:00
Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.
Answers: 1
You know the right answer?
3) Every year Sully buys 130 red pens for grading at the beginning of the year. He figures that the...
Questions
question
Mathematics, 27.08.2019 20:30
question
History, 27.08.2019 20:30
question
Mathematics, 27.08.2019 20:30
question
History, 27.08.2019 20:30