Find the solutions of the following systems of equations, if they exist.(a) 
(b) 
(c) 
(d) 
What will be an ideal response?
(a) 
(b) 
(c) Infinite number of solutions: 
, 
(d) No solution
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Perform the indicated operation.14 tons 1195 lb + 3 tons 1859 lb
A. 11 tons 1336 lb B. 17 tons 1054 lb C. 18 tons 1054 lb D. 10 tons 1336 lb
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. Use the graph to answer the question.
At what time was the temperature 72°?
A. 9 a.m. and 10 a.m. B. 9 a.m. C. 10 a.m. D. 6 p.m.
Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 7.5 when x = 15;
Find y given x = 6.
A. k = 0.5; y = 3
B. k = 112.5; y = 
C. k = 1.5; y = 2.4
D. k = 0.5; y = 2.4
Establish the identity.sin
= 
(cos x + sin x)
What will be an ideal response?