How long is the arc intersected by a 2π/3 radian central angle in a circle with radius 7 feet?

An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?