Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.Speed is measured by distance divided by time.
A. If S represents speed, d distance, and t time, then t = 
.
B. If S represents speed, d distance, and t time, then S = 
.
C. If S represents speed, d distance, and t time, then d = 
.
D. If S represents speed, d distance, and t time, then S = 
.
Answer: D
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Solve the problem.Find all points on the cardiod r = a(1 - cos ?) where the tangent line is horizontal.
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Solve.The current i (in A) in a certain electric circuit is given by 
, where t is the time in seconds. Sketch a graph of this function. i A
t seconds
A. i A
t seconds
B. i A
t seconds
C. i A
t seconds
D. i A
t seconds
Calculate the simple interest and the final balance. Round to the nearest cent, if necessary.
A. Interest: $350; Final Balance: $650 B. Interest: $382; Final Balance: $682 C. Interest: $360; Final Balance: $660 D. Interest: $376; Final Balance: $676
Classify the triangle as scalene, isosceles, or equilateral.
A. equilateral B. isosceles C. scalene