Solve x2 − 8x − 20 = 0.
x = 4, x = −5
x = −4, x = 5
x = 2, x = −10
x = −2, x = 10

When turned about its axis of rotation, which shape could have created this three-dimensional object?

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

Three times the sum of a number and seven is negative thirty-six. what is the number?