Please i need this answered asap: A country's population is 1.6 million and each year, the population is 7.5%
lower than the previous year. Which of the following equations models the
country's population, where P is in millions of people and t is in years?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

What is the y-intercept of the line given by the equation

The trigonometric ratios sine and secant are reciprocals of each other