I’ll give out crown!!

Please explain the answer, because I wanna understand why.

2x+6y=12
10x+30y=40

What is the solution to this
system?

1: the ordered pair (5,20) is the solution

2: the ordered pair (-5,0) is the solution

3: there is no solution to this system

4: there are an infinite number of solutions to this system.

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

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called