The arithmetic sequence a; is defined by the formula:
ai= -3
ai = ai -1 – 5
Find the sum of the first 490 terms in the sequence.

Linet passes through (4.5) and is perpendicular to the line shown on the condirate grid.what is the equation of line t in standard form?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0