Let x be the number of loads carriers and y the number of loads by air carrier. which system of inequalities represent this solution

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _