Justin threw a football to his friend, and the height of the football in meters above the ground after t seconds is modeled by f (t) = -4.9++ 30t + 13. When did the football hit the ground?

1) 13 sec
2) 6.53 sec
3) 3.06 sec
4) 58.92 sec

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Proportions in triangles solve for x