Solve the problem.The temperature at the South pole was 1° at 8 am. At 3 pm, it was -24°. By how many degrees did the temperature drop?
A. by -23°
B. by 25°
C. by -25°
D. by 23°
Answer: B
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Use FOIL to multiply.(4x - 11)(x - 7)
A. 4x2 - 40x + 77 B. x2 - 39x - 40 C. x2 + 77x - 39 D. 4x2 - 39x + 77
Find the center and radius of the circle.(x + 1)2 + (y - 9)2 = 81
A. Center: (-1, 9); radius: 9 B. Center: (9, -1); radius: 9 C. Center: (-1, 9); radius: 81 D. Center: (9, -1); radius: 81
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.1.2x + 1.3y - 5.0z = 2.25.9x - 1.6y + 1.8z = -2.84.3x + 2.2y + 1.9z = 11.1
A. (1.4, 15.2, 2.5) B. (0.7, 7.6, 1.3) C. (1.8, 19.0, 3.2) D. (0.4, 3.8, 0.6)
Solve the problem.The following data represents the Olympic winning time in Women's 100 m Freestyle. 
Find the slope of the line of best fit for the data set and interpret it.
What will be an ideal response?