13-11 × 1316 × 13-3 × 134 × 13-5
13-21 × 13-4 × 13-5 × 1314 × 13-6
1333 × 13-2 × 135 × 13-13 × 13-8
130 × 1310 × 13-12 × 135 × 134

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

Multiplying an even number of negative numbers gives an answer that is choose from:

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?