Evaluate the expression 3x2 + 5xy – 2 for x = 3 and y = -2.
plug in 3 for x and -2 for y
The formula for the surface area of a cone is πrs + πr2, where r is the radius of the base and s is the length of the slant. Find the surface area of a cone with radius 10 cm and a slant of 12 cm (use 3.14 for π).
remember that surface area is written in units squared
Evaluate the expression x3 + x2 + x + 1 for x values equal to -2, -1, 0, 1, 2.
make a chart
(-2, -5), (-1, 0), (0,1), (1, 4), and (2, 15)
Which of these values of x (1, 2, 3, 4, 5, 6) make this equation true: x2 – 8x = -12?