The approximate rate of change in the number (in billions) of monthly text messages is given by the equation f'(t) = 7.7t-15.3 where t represents the number of years since 2000. In 2003 (t=3) there were approximately 9.4 billion monthly text messages. Complete parts a. and b. below. O a. Find the function that gives the total number (in billions) of monthly text messages in year t. CO sl f(t) = S -si b. According to this function, how many monthly text messages were there in 2009? billion lat ch ge ra la fo mate appy. appro H Q ... CI H Next

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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The approximate rate of change in the number (in billions) of monthly text messages is given by the equation
f'(t)= 7.7t-15.3
where t represents the number of years since 2000. In 2003 (t=3) there were approximately 9.4 billion monthly text messages. Complete parts a. and b. below.
O a. Find the function that gives the total number (in billions) of monthly text messages in year t.
CO
f(t) =
S
si
b. According to this function, how many monthly text messages were there in 2009?
billion
sl
lat
ch
ge ra
la fo
mate
appy.
appro
H
Q
CI
H
4
Next
Transcribed Image Text:The approximate rate of change in the number (in billions) of monthly text messages is given by the equation f'(t)= 7.7t-15.3 where t represents the number of years since 2000. In 2003 (t=3) there were approximately 9.4 billion monthly text messages. Complete parts a. and b. below. O a. Find the function that gives the total number (in billions) of monthly text messages in year t. CO f(t) = S si b. According to this function, how many monthly text messages were there in 2009? billion sl lat ch ge ra la fo mate appy. appro H Q CI H 4 Next
at
The approximate rate of change in the number (in billions) of monthly text messages is given by the equation
f'(t) = 7.7t-15.3
where t represents the number of years since 2000. In 2003 (t=3) there were approximately 9.4 billion monthly text messages. Complete parts a. and b. below.
ch
a. Find the function that gives the total number (in billions) of monthly text messages in year t.
f(t) =
b. According to this function, how many monthly text messages were there in 2009?
billion
e ra
a f
ate
opy.
ppro
Next
Transcribed Image Text:at The approximate rate of change in the number (in billions) of monthly text messages is given by the equation f'(t) = 7.7t-15.3 where t represents the number of years since 2000. In 2003 (t=3) there were approximately 9.4 billion monthly text messages. Complete parts a. and b. below. ch a. Find the function that gives the total number (in billions) of monthly text messages in year t. f(t) = b. According to this function, how many monthly text messages were there in 2009? billion e ra a f ate opy. ppro Next
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