Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Answer: C
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Find the angle between u and v in radians.u = 5i, v = 5i - 10j
A. 1.56 B. 1.40 C. 1.11 D. 0.46
Solve. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent.Write the equivalent decimal and percent for 2
.
A. 2.333; 23.33% B. 2.453; 2453% C. 2.333; 233.3% D. 2.453; 245.3%
Determine whether or not the function is one-to-one.f(x) = 5x3 - 4
A. Yes B. No
Solve the problem.Softee Blankets charges $5 for shipping orders of $20 or less, $10 for orders from $20.01 to $70, and $15 for orders over $70. One week shipping charges for 530 orders totaled $5050. There were 50 more orders for $20 or less shipped than there were orders for over $70. Find the number of orders shipped at each rate.
A. $20 or less: 170; $20.01 to $70: 240; over $70: 120 B. $20 or less: 290; $20.01 to $70: 120; over $70: 120 C. $20 or less: 240; $20.01 to $70: 170; over $70: 120 D. The numbers cannot be determined from the given information.