Determine the domain and range of the relation. State whether the relation is a function or not a function. 
A. domain: {-4,-1, 1, 4}
range: { 14, 15}
not a function
B. domain: { 14, 15}
range: {-4,-1, 1, 4}
function
C. domain: { 14, 15}
range: {-4,-1, 1, 4}
not a function
D. domain: {-4,-1, 1, 4}
range: { 14, 15}
function
Answer: D
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Solve the problem.The amount of a medication (in mg) in the bloodstream t hours after the medication is taken is given by M(t). Estimate the values of M'(1) and M'(6), rounding to the nearest whole number. Include units on your answers and interpret the physical meaning of these values.
A. M'(1) = -140, M'(6) = -3; The amount of medication in the bloodstream is decreasing at a rate of 140 mg/hr at t = 1 hour, and is decreasing at a rate of 3 mg/hr at t = 6 hours. B. M'(1) = -54, M'(6) = -8; The amount of medication in the bloodstream is decreasing at a rate of 54 mg/hr at t = 1 hour, and is decreasing at a rate of 8 mg/hr at t = 6 hours. C. M'(1) = -28, M'(6) = -2; The amount of medication in the bloodstream is decreasing at a rate of 28 mg/hr at t = 1 hour, and is decreasing at a rate of 2 mg/hr at t = 6 hours. D. M'(1) = -92, M'(6) = -6; The amount of medication in the bloodstream is decreasing at a rate of 92 mg/hr at t = 1 hour, and is decreasing at a rate of 6 mg/hr at t = 6 hours.
Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.-3x - y - 9z = -21 2x + 9y - 4z = 79 6x - 2y + z = -11
A. Inconsistent B. x = 1, y = 1, z = 9 C. Unlimited: x = 1, y = 9, z = 1, x = 1, y = 1, z = 9 D. x = 1, y = 9, z = 1
Use the two steps for solving a linear programming problem to solve the problem.A chemical company must use a new process to reduce pollution. The old emits 7 g of sulphur and 14 g of lead per liter of chemical made. The new emits 2 g of sulphur and 3.5 g of lead per liter of chemical made. The company makes a profit per liter of 
under the old and 
under the new. No more than 13,701 g of sulphur and no more than 10,598 g of lead can be emitted daily. How many liters of chemical could be made under the old and under the new to maximize profits? Let x represent the
number of liters produced under the old process and y represent the number of liters produced under the new process. A. 0 liter(s) under old process and 3028 liter(s) under new process B. 0 liter(s) under old process and 2928 liter(s) under new process C. 1093 liter(s) under old process and 2928 liter(s) under new process D. 3028 liter(s) under old process and 1093 liter(s) under new process
Find I when V = 6.5 V
What will be an ideal response?