Solve the problem. First use front end rounding. Then find the exact answer.A particular model of side-loading washing machine costs $180 more than a top-loading machine. If the top-loading machine costs $253, find the cost of the side-loading machine.
A. Estimate: $430; exact: $433
B. Estimate: $500; exact: $433
C. Estimate: $70; exact: $73
D. Estimate: $100; exact: $73
Answer: B
Mathematics
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Expand and simplify the given expression by use of the binomial formula.(3x + 1)4
A. 81x3 + 108x2 + 54x + 12 B. 81x3 + 108x2 + 12x - 1 C. 81x4 + 108x3 + 54x2 + 12x - 1 D. 81x4 + 108x3 + 54x2 + 12x + 1
Mathematics
Evaluate the given expression.sec
A. 
B. 
C. 2
D. 
Mathematics
Find the limit.
tan x
A. 1 B. 0 C. ? D. -?
Mathematics
Solve the problem.Ray's gross pay is $321.20 a week. $46 is withheld for federal income tax, $24.12 for FICA tax, and $11.24 for other deductions. How much of his pay is left?
A. $402.56 B. $81.36 C. $229.84 D. $239.84
Mathematics