Solve the problem using your calculator.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Use a graphing calculator to model the data with a linear function that predicts a student's course grade as a function of the number of hours spent in lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 44.3 + 0.930x
B. y = 0.930 + 44.3x
C. y = 88.6 - 1.86x
D. y = 1.86 + 88.6x
Answer: C
Mathematics
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Simplify the expression. Assume that all variables are positive when they appear.
A. y6
B. y3
C. 
D. y
Mathematics
Solve the problem.Let y = -9x + 221 represent the number of students present in a large class, where x represents the number of hours of study required weekly. What is the rate of change of the number of students in the class with respect to the number of hours of study?
A. -221 students per hour of study time B. 9 students per hour of study time C. -9 students per hour of study time D. 221 students per hour of study time
Mathematics
Multiply.
? 
A. 
B. 
C. 
D. 
Mathematics
Multiply.0.06
A. 0.054 B. 0.0054 C. 0.54 D. 5.4
Mathematics