Find the magnitude of the indicated vector.If u = -6i + j and v = -7i + j, find the magnitude of u + v.
A. 
B. 1
C. 
D. 
Answer: A
Mathematics
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Add the numbers using the number line.-8 + 6 
A. -2 B. -14 C. 14 D. 2
Mathematics
Find the domain of the vector-valued function. r(t) = sin 4t i + e
j
A. t > 4
B. All real numbers
C. t ? 
D. t ? 0
Mathematics
Solve the problem.It costs $29 per hour plus a flat fee of $17 for a plumber to make a house call. What is an equation of the form 
for this situation?
A. y = 29x B. y = 17x C. y = 17x + 29 D. y = 29x + 17
Mathematics
Solve the problem.The number of acres in a landfill is given by the function 
where t is measured in years. How many acres will the landfill have after 8 years? (Round to the nearest acre.)
A. 1154 acres B. 2657 acres C. 1944 acres D. 1155 acres
Mathematics