Combining like terms
simplify the expression
-6k+7k

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

Plz me plz i need and plz delte this after answer

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz