Here is a linear sequence.
4
11
18
25
Work out an expression for the nth term.​

7x+8y=-18, 4x-9y=-3 solve the system of equations

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years