Simplify.
÷ 
A. 
B. 
C. 
D. 
Answer: C
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Find the indicated quantity.a44, when a1 = 10 and d = 3
A. 142 B. 139 C. -119 D. -122
Solve the problem.You are driving along a highway at a steady 86 ft/sec when you see a deer ahead and slam on the brakes. What constant deceleration is required to stop your car in 
A. 0.06 ft/sec2 B. 7.74 ft/sec2 C. 15.47 ft/sec2 D. 30.95 ft/sec2
Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
If students look to authorities such as the teacher, the answers in the back of a text, or a calculator to determine mathematical correctness rather than their own reasoning, they can be said to have:
a. External sources of conviction b. Internal sources of conviction c. A collapse metaphor d. An approximation metaphor