Selena is standing on a rock cliff that is 52 feet high. she tosses a pebble upward over the edge, where it hits the top of a 12 foot high boulder. the quadratic equation that models the path of the pebble is given below. how long did it take for the pebble to hit the top of the boulder? p(t)=-16t^2+12t+52

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

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.

Me i’m stuck on all these questions besides the two bottom ones