Find the length of the indicated portion of the trajectory.r(t) = (1 + 3t)i + (1 + 7t)j + (2 - 2t)k, -1 ? t ? 0
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Calculate the derivative of the function. Then find the value of the derivative as specified.
? =1 if r = 
A. 
= 
; 
? =1
= 
B. 
= - 
; 
? =1
= - 
C. 
= - 
; 
? =1
= - 
D. 
= 
; 
? =1
= 
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (2-2)0
A. 1
B. 
C. 0
D. -4
Mathematics
Solve the problem.Ron and Kathy are ticket sellers for their class play. Ron sells student tickets for $2.00 each, and Kathy sells adult tickets for $4.50 each. If their total revenue for 364 tickets is $1175.50, then how many tickets did Ron sell?
A. 179 tickets B. 157 tickets C. 185 tickets D. 163 tickets
Mathematics