Solve by the substitution method. x - 4y = -16-4x - 3y = -12
A. {(-4, 0)}
B. {(1, 3)}
C. {(0, 4)}
D. ?
Answer: C
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Solve the problem. Assume all numbers are approximate unless otherwise stated or the number has been determined by a definition or counting process.The capacitance of a certain element in an electric circuit (in ?F) was determined by calculating the value of 
Calculate this capacitance.
A. 8.0 ?F B. 7.3 ?F C. 7.7 ?F D. 7.5 ?F
Calculate the truth value of the negation of the fuzzy statement. The truth value of the fuzzy statement is given in parentheses.There is no remainder in the mathematics of infinity. (0.69)
A. 0.31 B. 1 C. 0 D. 0.69
Find the derivative of the function.f(x) = log8 (x7 + 1)
A. 
B. 
C. 
+ 7x6
D. 
Solve the problem.The graph shows the hours studied and the exam grades obtained on a finite math exam for 8 students. (The two points on the line do not represent any of the eight students.) The line of best fit, the line graphed on the coordinate system, can be used to approximate the test grade the average student receives for the number of hours they study. 
Find the equation of the line of best fit. Then use the equation to estimate a test grade for a student who has studied for 6 hour(s).
A. approximately 96 B. approximately 93 C. approximately 88 D. approximately 91