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mia12340
27.06.2019 •
Mathematics
Shryia read a 480480-page-long book cover to cover in a single session, at a constant rate. after reading for1.51.5 hours, she had 402402 pages left to read.let p(t)p(t) denote the number of pages to read pp as a function of time tt (measured in hours).write the function's formula.p(t)=
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Ответ:
Function formula P(t) = -52t +480
Step-by-step explanation:
here, P(t) denotes the number of pages to read and t represents the time in hour.
Given the statement: Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 402 pages left to read.
⇒Total number of page in a long book = 480
After reading for 1.5 hours, she had 402 pages left to read.
Then,
Total number of page Shryia read in 1.5 hours is:
Constant rate at which she is reading her book =
page per hour
Then, the function formula is given by:
P(t) = -52t + 480 ; where t is in hours.
Check:
P(t) = -52t + 480
P(1.5) = -52(1.5) + 480 = -78 + 480 = 402 True.
Ответ: