The amount in kilograms a, of a radioactive element that remains after t hours can be modeled by the equation a=0.65(0.92)t. what is the rate of decrease of this radioactive element

Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

Pls brainliest will be awarded if answer is correct