Mercury is the closet planet to the Sun at a distance of 36 million miles. The closest star to the Sun is Proxima Centauri, which is 4.24 light years away. A light year is 5.9 ­× 1012 miles. Select the correct exponent from the drop-down menus that makes each statement true.

The distance in miles from Mercury to the Sun in scientific notation is 3.6 × 10 .

The number of miles from the Sun to Proxima Centauri in scientific
notation is 2.5 × 10 .

The distance from the Sun to Proxima Centauri is about 7 × 10 times greater than the distance from the Sun to Mercury.

Classify each polynomial by its degree and by its number of terms.

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

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.