Decide whether the statement makes sense. Explain your reasoning.To convert from Kelvin to Celsius, you subtract 273.15. For example, -100 K = -373.15 °C.
What will be an ideal response?
Does not make sense. The general formula is correct, but the numbers don't make sense. A temperature of 0 K is the coldest possible temperature, known as absolute zero. A temperature of -100 K is theoretically impossible. (Explanations will vary.)
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Sketch the graph of the quadratic function. Identify the vertex, intercepts, and the equation for the axis of symmetry.f(x) = x2 + 4x - 7
A. vertex: 
x-intercepts: (-4, 0) and (3, 0)
y-intercept: (0, -12)
axis of symmetry: x = - 
B. vertex: (-2, -11)
x-intercepts: (-2 ± 
, 0)
y-intercept: (0, -7)
axis of symmetry: x = -2 
C. vertex: (-2, 3)
x-intercepts: none
y-intercept: (0, 7)
axis of symmetry: x = -2
D. vertex: (4, 0)
x-intercept: (4, 0)
y-intercept: (0, 7)
axis of symmetry: x = 4 
Add.(-2a2 - 3a - 7) + (5a2 - 3a + 5)
A. -10a2 - 3a - 2 B. 3a4 - 6a2 - 2 C. 3a2 - 3a - 2 D. 3a2 - 6a - 2
Determine the period of the function and sketch its graph.y = cos 
A. period: 6?
B. period: 3?
C. period: 6?
D. period: 6
Solve the equation or inequality. Write inequality solutions in interval notation.
+ 
= 7
A. 
B. - 9
C. 
D. 