Find the angle represented by x ( round the nearest tenth of a degree) A 16.2 B 16.4 c17.1 d17.4

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

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.

Idk math. i need to fill in the missing numbers . due tommorow !