How many solutions are there?

2x+5y=7

10y=-4x+14

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

The measure of an angle is 117°. what is the measure of a supplementary angle?

If the discriminant if a quadratic equation is 4 which statement describes the roots?