Which statement is true for the equation 2x − 2x − 7 = −7? It has infinitely many solutions. It has two solutions. It has one solution. It has no solution

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.