Answer:
$27
Step-by-step explanation:
b will be the number of books and p will be the price, now we just use a system of equations
bp = 864
b=864/p
(b+4)(p-3) = 864
(864/p +4)(p-3) = 864
864 - 2592/p + 4p -12 = 864
864p - 2592 + 4p^2 -12p - 864p = 0
4p^2 -12p -2592 = 0
4(p^2 - 3p -648) = 0
4((p - 3/2)^2 - 2601/4) = 0 (completed the square here)
4(p - 3/2)^2 -2601 = 0
p = +/-51/2+3/2
p = 27 or -24
A negative price doesn't make sense so it's 27, now we go back to the other equation if you want to find the number of books.
b=864/p
b = 864/27
b = 32
"12" represents Mike's original distance from his home. As he rides, this distance decreases by 2 miles/minute (which is rather unlikely, as that'd be 120 mph).
17,000 because u look at the 5 and it is higher than four so u add 1 to the 6
5 feet per seconds is 100 yards per hour. So 5 feet per 3 sec will be...?
<h3>log [ (√3)(2 - x)/(3x) ] = log (2 - x) - ¹/₂ log 3 - log x</h3>
<h3>Further explanation</h3>
Let's recall following formula about Exponents and Surds:





<em>Let us tackle the problem!</em>






<h3>Learn more</h3>
<h3>Answer details</h3>
Grade: High School
Subject: Mathematics
Chapter: Exponents and Surds
Keywords: Power , Multiplication , Division , Exponent , Surd , Negative , Postive , Value , Equivalent , Perfect , Square , Factor.