(I will mark brainlest, please help me. I'm just really confused.) (25 POINTS)

What are the possible solutions for a system with a linear and a quadratic equation? Select all that apply

1.) infinitely many
2.) 4
3.) 1
4.) 2
5.) 0
6.) 3

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

When the ball has traveled a distance of

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)