Find the value of x for the side of a kite

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.