Solve the problem.The number of years since two independently evolving languages split off from a common ancestral language is approximated by 
where r is the percent of words from the ancestral language common to both languages now. What is N if 
Round to the nearest year.
A. 281 years
B. 2811 years
C. 20,215 years
D. 2022 years
Answer: B
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Rewrite as a radical expression and simplify if possible. Assume all variables represent nonnegative real numbers.(196t6)1/2
A. 14t3
B. 14t6
C. 
D. 14
Solve the problem.A sushi restaurant charges $8.95 for its lunch buffet and $12.95 for its dinner buffet. In order for the restaurant to turn a profit, its buffets must generate daily revenue of at least $2190. Write an inequality that describes this requirement. Let x represent the number of lunch buffet customers and y represent the number of dinner buffet customers.
A. 8.95x + 12.95y ? 2190 B. 8.95x + 12.95y ? 2190 C. 8.95x + 12.95y = 2190 D. 8.95x + 12.95y ? 2190
Find the cube root of the number. Approximate the answer to the nearest hundredth whenever appropriate.- 
A. - 
B. 
C. -6
D. 6
Rewrite with rational exponents.
A. -171/7
B. 71/17
C. 
D. 171/7