Simplify.8t + 9
A. 80t + 72
B. -10t + 72
C. -10t + 17
D. 80t + 17
Answer: B
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Solve the indicated systems of equations graphically.The power developed in an electric resistor is i2R, where i is the current and R is the the resistance. If a first current passes through a 
resistor and a second current passes through a 
resistor, the total power produced is 15 W. If the resistors are reversed, the total power produced is 18 W. Find the currents (in A) if 
A. 1.8 A, 0.6 A B. 5.5 A, 1.3 A C. 0.9 A, 307.0 A D. 0.6 A, 163.9 A
Provide an appropriate response.For the graph of y = 
, (a) Determine the intercepts.(b)Determine whether the graph is symmetric about the x-axis, the y-axis, the origin, or the line y = x.(c)Sketch the graph. (d) Based on your graph, is y a function of x? If so, state (e) the domain and (f) the range.
What will be an ideal response?
Solve the formula for the given variable.I = 
for r
A. r = 
B. r = IR(In - E)
C. r = 
D. r = 
Find the sum of the arithmetic series using a formula.2 + 4 + 6 + ... + 328
A. 26,732 B. 26,896 C. 27,060 D. 27,225