Solve the equation.
y - (y - 
) = 
( y + 5)
A. 
B. - 
C. 
D. - 
Answer: A
Mathematics
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Solve the problem.Use the formula P = Iekt. A bacterial culture has an initial population of 10,000. If its population declines to 6000 in 6 hours, what will it be at the end of 8 hours?
A. 5061 B. 6000 C. 2000 D. 2531
Mathematics
Use I = Prt for simple interest to find the indicated quantity.P = $3000; t = 90 days; I = $105. Find r. (Use 360 days in a year.)
A. 3.5% B. 14.0% C. 9.7% D. 14.2%
Mathematics
Factor the perfect square trinomial completely.25k3m - 90k2m2 + 81km3
A. km(5k + 9m)2 B. km(5k - 9m)(5k + 9m) C. (25k2m + km)(k + 81m2) D. km(5k - 9m)2
Mathematics
Multiply.(8a + 7b)(9a - 2b)
A. 72a2 + 63ab - 14b2 B. 72a2 + 47ab + 47b2 C. 72a2 + 47ab - 14b2 D. 72a2 - 16ab - 14b2
Mathematics