A radioactive substance decays exponentially. A scientist begins with 130 milligrams of a radioactive substance. After 24 hours, 65 mg of the substance remains. How many milligrams will remain after 45 hours?

Veronica loves to create things. she can make 5 craft pieces in 5 days. on the basis of a contract she has to make 20 pieces of crafts. how many days will she take

The equation of a line is 2 (y + 1) = 10x + 3. The y-intercept of the line is, and the slope of the line is.

Mark Ogara rented a truck from Avis Rent-A-Car for the weekend (2 days). The base rental price was $30.65 per day plus 1614 cents per mile. Mark drove 417.85 miles. How much does Mark owe? (Round your answer to the nearest cent.)

The product of two consecutive integers is equal to 14 more than 4 times the sum. This can be simplified to x²-7x-18=0. What are the two integers?

Andrea purchased 10 packs of trading cards online and received a 20% discount of each pack shipping cost 3.99 write an algebraic expression to represent the total cost of the trading cards with the shipping cost

Which statement is true? Two angles can be complementary and equal. Two angles cannot be equal if they are complementary. An angle can be complementary only if it is 90°. Only three angles can be supplementary.

Solve for x. Your answer must be simplified. -3

Rick's office recycled a total of 60 kilograms of paper over 15 weeks. How many weeks will it take Rick's office to recycle a total of 72 kilograms of paper? Solve using unit rates.

2 people are packing equal number of small boxes into larger boxes. One person has 3 large boxes that are full of small boxes and 24 small boxes not yet packed.

he population of a town increased by 15% in 2016, and decreased by 5% in 2017. If the population of the town was 60,000 in the beginning of 2016, then what was it at the end of 2017?