Answer:

Explanation:
This is an exponential growing: there is a constant growing<em> factor </em>which multiplies the value number of letters sent every week.
The growing factor <em>4 letters every 9.1 weeks</em> means that every 9.1 weeks the number of letters is multiplied by 4.
Then, if the number of weeks is t, the number of times the number of letters increase is t/9.1.
Then, the exponential<em> function</em> <em>that models the number of people who receive the email t weeks since Tobias initially sent the chain letter</em>, has the form:

<em>Tobias initially sent the chain letter to 37 friends</em>; thus, the initial value is 37, and the complete function is:
, where t is the number of weeks since Tobias initially sent the chain letter.
Answer:
4,782,969
Step-by-step explanation:
9^7
Written in expanded form = 9 times 9 times 9 times 9 times 9 times 9 times 9
= 9 × 9 × 9 × 9 × 9 × 9 × 9
= 4,782,969
9^7 means multiplying 9 in 7 places
9^7 = 4,782,969
Answer:
=−36p+52x+1324
Step-by-step explanation:
7x−7+35−34p+45x−2p+64
=7x+−7+35+−34p+45x+−2p+1296
Combine Like Terms:
=7x+−7+35+−34p+45x+−2p+1296
=(−34p+−2p)+(7x+45x)+(−7+35+1296)
=−36p+52x+1324
Answer:
1/5 gallon
Step-by-step explanation:
4/5 divided into 4 is the same that 4/5 multiplied by 1/4
4/5* 1/4 = 4/20 = 1/5
Answer:
1440 Buckets of Water
Step-by-step explanation:
1 Bucket = 2.5 Gallons of Water
1 Cubic Foot = 7.5 Gallons of Water
1 Cubic Foot = 3 Buckets
480 x 3 = 1440