Solve for x and justify your answer ​

Equation for the calculation double 2 and then add 5

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2