Use estimation to select the best response. Do not calculate.
?
If your credit card balance is $650 and the interest rate is 12% APR, then the credit card interest charge is
?
A. $8.25
B. $65
C. $6.50
Answer: C
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Translate the phrase into an arithmetic expression and calculate by hand.38 more than 67
A. 67 + 38 = 95 B. 67 + 38 = 104 C. 67 + 38 = 106 D. 67 + 38 = 105
Solve the problem.A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $46 under this promotional deal, how many minutes of phone calls did he make? Round to the nearest integer, if necessary.
A. 1220 min B. 6 min C. 2 min D. 620 min
Solve the problem.The table lists the average composite scores on a national entrance exam for selected years.
(i) Make a line graph of the data.(ii) If the graph represents a piecewise-linear function f, find a symbolic representation for the piece of f located on the interval 
A. 
f(x) = 0.75x - 1356.5 if 1982 ? x ? 1986
B. 
f(x) = 4.4x - 8598.1 if 1986 ? x ? 1988
C. 
f(x) = 122.7 if 1986 ? x ? 1988
D. 
f(x) = 131.5 if 1982 ? x ? 1984
Determine which of the rational functions given below has the following feature(s).The y-intercept is (0, 4)
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 