Use the five-step strategy for solving word problems.Sybil is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $230 for materials and equipment rental plus $60 per hour for labor. Company B gave and estimate of $300 for materials and equipment rental plus $50 per hour for labor. Determine how many hours of labor will be required for the two companies to cost the same.
A. 10 hours
B. 11 hours
C. 7 hours
D. 6 hours
Answer: C
Mathematics
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A. 
or 
B. 
C. 
or 
D. 
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what was the value of the ring 10 years ago? (Round your answer to the nearest dollar.)
A. $655 B. $4,409 C. $625 D. $230
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Find the exact value of cos 135º. ?
A. ?
B. 
C. 
D. 
E. 
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Find the derivative of the function.f(x) = ln 
A. 
B. 
C. 
D. 
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