Determine an estimate of the exact answer. Use estimation by rounding.Linda scored 92, 65, 80, 88, 84, and 100 on her calculus tests. Round each score to the nearest ten to estimate her total score.
A. 520
B. 490
C. 510
D. 500
Answer: C
Mathematics
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Add or subtract the rational expressions. Reduce to simplest terms.
- 
A. 0
B. 6
C. 
D. 
Mathematics
Solve the problem.Police use the formula s = S 
, where S is the test-car speed and L is the test-skid length, to find the actual speed s in an accident which left a skid mark of length l. Simplify the expression S 
by rationalizing the denominator.
A. 
B. 
C. 
D. S 
Mathematics
Solve.If fencing costs $8 per foot, find the total cost for fencing a rectangular garden 
by 
A. $7,728 B. $1,040 C. $520 D. $2,080
Mathematics
Use = or ? for ? to write a true sentence.
? 
A. = B. ?
Mathematics