Write the phrase as a mathematical expression. Use x to represent the number. Combine like terms if possible.Eight times a number added to -7, subtracted from twice the sum of eight times the number 
A. 8(x - 7) - (2 + 8)(x - 6); 4 - 2x
B. (-7 + 8x) - 2(8x - 6); 5 - 8x
C. 2(8x - 6) - (-7 + 8x); -5 + 8x
D. (2 + 8)(x + -6) - 8(x - 7); -4 + 2x
Answer: C
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Match each description below with the letter of the correct number set.
A. natural B. whole C. integer
In an adiabatic process (one in which no heat transfer takes place), the pressure P and volume V of an ideal gas such as oxygen satisfy the equation 
where C is a constant. Suppose that at a certain instant of time, the volume of the gas is 2L, the pressure is 100 kPa, and the pressure is decreasing at the rate of 5 kPa/sec. Find the rate at which the volume is changing.
What will be an ideal response?
Graph the given function. Identify the vertex and the intercepts.y = -2x2 + 16x - 35
A. Vertex (-4, -3)
x-intercepts: none
y-intercept - 11
B. Vertex (4, -3)
x-intercepts: none
y-intercept: - 11
C. Vertex: (4, -3)
x-intercepts: none
y-intercept: -35
D. Vertex (-4, -3)
x-intercepts: none
y-intercept: -35
Differentiate.y = 6x2
A. 6x2 ? 2x ? ln x B. 6x2 ? 2x ? ln 6 C. 6x2 ? x ? ln 6 D. 2x(ln 6)