Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is the cost in dollars, and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 68 watches
B. 30 watches
C. 43 watches
D. 34 watches
Answer: C
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Solve the problem.
An investment of $13,335 earns 12% interest compounded monthly for 3 years. (a) What is the future value of the investment? (b) If money can be deposited at 8% compounded quarterly, find the present value of the investment.
A. (a) $19,079.32 (b) $15,043.85 B. (a) $18,890.40 (b) $8113.76 C. (a) $20,079.32 (b) $9113.76 D. (a) $15,026.21 (b) $7495.86
Determine the direction in which the parabola opens, and the vertex.y = x2 + 12x + 35
A. Opens upward; (6, -1) B. Opens upward; (-6, -1) C. Opens to the right; (-1, 6) D. Opens to the right; (-1, -6)
Provide an appropriate response.An investor has $12,000 to purchase stock in two companies. If the first stock sells for $45 per share, and the second stock sells for $62 per share, find an equation that shows the possible ways to purchase the stock.
What will be an ideal response?
Find the domain and the vertical asymptote of the function.f(x) = 4 - log2x
A. Domain: [0, ?); vertical asymptote: x = 0 B. Domain: [0, ?); vertical asymptote: none C. Domain: (4, ?); vertical asymptote: x = 4 D. Domain: (0, ?); vertical asymptote: x = 0