Aparticular model of walkie-talkie can broadcast in a circular area. the radius of the broadcast area is 7,000 feet. find the area of this circle to the nearest square foot. use 3.14 for π.

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

3x + 4y = 5 x- 3y = -7 solve by substitution

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()