Ajet travels 470 miles in 2 hours. at this rate, how far could the jet fly in 15 hours? what is the rate of speed of the jet?

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.

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0). what are the directrices?

Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?