Solve the equation. First simplify the expression by combining like terms.
(r + 6) = 
(r + 8)
A. -1
B. 2
C. -2
D. 1
Answer: A
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Solve the problem.A researcher finds a positive correlation between the number of vaccinations and the incidence of autism. Can you conclude that vaccinations can cause autism? Suggest some ways that the researcher could go about establishing causality. Refer to the six guidelines for establishing causality.
What will be an ideal response?
Write the number as the product of prime factors.350
A. 2 ? 5 ? 7 B. 2 ? 5 ? 5 ? 7 C. 14 ? 5 ? 5 D. 2 ? 2 ? 5 ? 5 ? 7
Use logarithms to solve the equation for t. Please round the answer to four decimal places.
?
?
A. ?
B. 
C. 
D. 
E. 
Solve the problem.The cost of manufacturing a molded part is related to the quantity produced during a production run. When 100 parts are produced, the cost is $300. When 300 parts are produced, the cost is $1900. What is the average cost per part?
A. $9.00 per part B. $5.33 per part C. $8.00 per part D. $0.13 per part