How many sides of a polygon have if the sum of the measures of its angle is 2880?

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.