When justin goes to work, he drives at an average speed of 55 miles per hour. it takes about 1 hour and 30 minutes for justin to arrive at work. his car travels about 30 miles per gallon of gas. if gas costs $3.45 per gallon, how much money does justin spend to travel each mile to work?

group of answer choices

$1.43

$0.12

$6.33

$0.70

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.

What percent of 18 is 24? and plz explain thx.

Tom drove 206 miles in 3.9 hours. estimate his average speed.