Calculate the arc length of the indicated portion of the curve r(t).r(t) = (7cos3 6t)j + (7sin3 6t)k; 
? ? t ? 
?
A. 
B. 
C. 21
D. 0
Answer: A
Mathematics
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Rewrite without rational exponents, and simplify, if possible.811/4
A. 243 B. 12 C. 36 D. 3
Mathematics
Find the equation of the line of best fit from the data in the table. Round the slope and the y-intercept to the nearest hundredth.
A. y = 9.2x - 2.1 B. y= 10x - 3 C. y = 9x - 3 D. y = 9.8x - 2.6
Mathematics
Solve the problem.You have $50,000 and wish to invest part at 10% and the rest at 6%. How much should be invested at each rate to produce the same return as if it all had been invested at 9%?
A. $37,500 at 6%, $12,500 at 10% B. $37,000 at 10%, $13,000 at 6% C. $37,000 at 6%, $13,000 at 10% D. $37,500 at 10%, $12,500 at 6%
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.12
? 3
A. 36
B. 15
C. 36
D. 36
? 
Mathematics