Use the imaginary unit to write the expression.
A. i
B. ±20
C. 20i
D. -20i
Answer: C
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Find an equation for the line tangent to the given curve at the indicated point.y = x2 - 4 at (-2, 0)
A. y = -4x - 12 B. y = -4x - 8 C. y = -2x - 8 D. y = -4x - 16
Solve the problem.A couple have bought a new house and are comparing quotes from two moving companies for moving their furniture. Company A charges $100 for the truck and $45 per hour for the movers. Company B charges $90 for the truck and $60 per hour for the movers. Create a cost equation for each company where y is the total cost and x is the number of hours of labor. Write a system of equations.
A. 45y = x + 100 60y = x + 90 B. y = 45x + 100 y = 60x + 90 C. 45y = 100x 60y = 90x D. y = 100x + 45 y = 90x + 60
Write the following in words.6.000033
A. Six and thirty-three ten-millionths B. Six and thirty-three millionths C. Six and thirty-three thousandths D. Six and thirty-three hundred-thousandths
Find the vertex and axis of symmetry of the graph of the function.f(x) = -x2 + 8x
A. (4, 16); x = 4 B. (-4, -16); x = -4 C. (-16, 4); x = -16 D. (16, -4); x = 16