Solve the problem by setting up and solving a system of two linear equations in two variables.Chip downloaded 18 songs for his MP3 player for a total cost of $19.20 The songs from Muchmore Music cost $1.00 each, and the songs from Itunes cost $1.20 each. How many songs did Chip download from each service?
A. 12 songs from Muchmore.
6 songs from Itunes.
B. 13 songs from Muchmore.
5 songs from Itunes.
C. 10 songs from Muchmore.
8 songs from Itunes.
D. 14 songs from Muchmore.
4 songs from Itunes.
E. 11 songs from Muchmore.
7 songs from Itunes.
Answer: A
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The average speed of a vehicle on a stretch of a route between 6 A.M. and 10 A.M. on a typical weekday is approximated by the function
?
, where 
is measured in miles per hour and 
is measured in hours, with 
corresponding to 6 A.M.
?
At what time of the morning commute is the traffic moving at the slowest rate? What is the average speed of a vehicle at that time?
?
time = __________ A.M.
?
average speed = __________ mph
What will be an ideal response?
Solve the problem.Two machines are turned on at 8:00 A.M. If one can produce 73 items each hour and the other can produce 54 items each hour, at what time will they produce a total of 889 items?
A. 4:30 P.M. B. 2:00 P.M. C. 3:00 P.M. D. 4:00 P.M.
Solve the inequality graphically, numerically, or symbolically, and express the solution in interval notation. Where appropriate, round to the nearest tenth.
> 4
A. (-?, -0.5) ? (1.2, ?) B. (1.2, -0.5) C. (-?, 1.2) ? (-0.5, ?) D. (-0.5, 1.2)
Find the smallest positive value of t for which 
.
What will be an ideal response?