First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number.
A. Estimate: 6; Exact: 
B. Estimate: 7; Exact: 
C. Estimate: 7; Exact: 
D. Estimate: 6; Exact: 
Answer: C
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Solve the problem.Bruce is a retired carpenter who builds patio chairs and dog houses that he sells at the local flea market. It takes him 4 hours to build a dog house and 5 hours to build a patio chair. Bruce can work no more than 40 hours per week and he must produce more dog houses than chairs. Write a system of inequalities to describe this situation and solve the system by graphing. Use D for the number of dog houses and P for the number of patio chairs produced in a week. 
A. 
B. 
C. 
D. 
Divide.
A. 0.00007428 B. 0.0007428 C. 0.07428 D. 7.428
Solve the equation for the indicated variable.A = 
h(b1 + b2); b1
A. b1 = 
B. b1 = 
C. b1 = 
D. b1 = 
From a point on the floor the angle of elevation to the top of a door is 48º, while the angle of elevation to the ceiling above the door is 62º. If the ceiling is 12 feet above the floor, what is the vertical dimension of the door (see the figure)? Apply the rules regarding the use of significant digits when determining your answer.
?
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Vertical dimension of door = __________ ft
Fill in the blank(s) with the appropriate word(s).