Triangle ABCABCA, B, C has the following vertices: A(1,9)A(1,9)A, left parenthesis, 1, comma, 9, right parenthesis
B(11,-7)B(11,−7)B, left parenthesis, 11, comma, minus, 7, right parenthesis
C(-9,3)C(−9,3)C, left parenthesis, minus, 9, comma, 3, right parenthesis
Is triangle ABCABCA, B, C a right triangle, and why?

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.