Decide whether the following is an expression or an equation.-7x + 1 - 3x + 6 = 0
A. Expression
B. Equation
Answer: B
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Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = -7x2 - 2x - 12
A. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
B. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
C. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
D. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
Solve the problem.Two angles of a triangle are 30° and 100°. Find the third angle.
A. 40° B. 230° C. 50° D. 130°
Divide and write the answer in lowest terms.- 
÷ - 
A. 
B. - 
C. 
D. - 
Solve the equation by using the square root property. Simplify all radicals.r2 - 7 = 0
A. {
}
B. {±3.5}
C. {49}
D. {±
}