PLEASE HELP ME The inequality 1 < 2xC – 5 is true for all values of x
in which of the following sets?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.