State whether the graph is or is not that of a function.
A. Function
B. Not a function
Answer: A
Mathematics
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Solve the problem.The electric current (in A) in a certain circuit as a function of time (in s) is i = 4 + 7t. What total charge passes a point in the circuit in 9 s?
A. 603 C B. 67 C C. 287.5 C D. 319.5 C
Mathematics
An aqueous solution has a hydrogen concentration [H+] of 0.3 mol/L. Find the concentration of hydroxl ions [OH-] in the solution.
A. 3.33 × 1014 mol/L [H+] B. 3.33 × 10-14 mol/L [H+] C. 3.33 mol/L [H+] D. 3.33 × 10-13 mol/L [H+]
Mathematics
Divide and simplify.
A. 2x6 - 10x5 B. 7x11 C. -4x8 + 5x3 D. 2x6 + 5x3
Mathematics
Add.
+ 0 + 809 + -5246
A. 4513
B. 5979
C. 
D. 
Mathematics