Solve the problem.Assume that a watermelon dropped from a tall building falls 
in t sec. Find the watermelon's average speed during the first 5 sec of fall and the speed at the instant 
A. 160 ft/sec; 81 ft/sec
B. 80 ft/sec; 160 ft/sec
C. 40 ft/sec; 80 ft/sec
D. 81 ft/sec; 162 ft/sec
Answer: B
Mathematics
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Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log2
A. 8 log2x + 7 log2y + log25 B. (8 log2x)(7 log2y) - log25 C. 8 log2x - 7 log2y - log25 D. 8 log2x + 7 log2y - log25
Mathematics
Find the LCD of the rational expressions. Then rewrite each as an equivalent rational expression with the LCD.
; 
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Mathematics
Solve the equation for the specified variable.P = 2l + 2w for l
A. l = 
B. l = 
C. l = P - w
D. l = P - 2w
Mathematics
First, write the value or values of the variable that make a denominator zero. Then solve the equation.
= 
+ 22
A. 0; 
B. none; {2}
C. 0, 2; 
D. 0; {4}
Mathematics