Part a: explain why x = 6 makes 4x − 5 ≤ 19 true but not 4x − 5 < 19. (5 points)

part b: what value from the set {4, 5, 6, 7, 8} makes the equation 4x + 3 = 23 true? show your work.

Will give brainliest! aubrey was offered a job that paid a salary of $45,000 in its first year. the salary was set to increase by 2% per year every year. if aubrey worked at the job for 20 years, what was the total amount of money earned over the 20 years, to the nearest whole number?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Is this a polynomial function? i need to know asap