A football is kicked from ground level with an initial velocity of 72 feet per second. The height above the ground is modeled by the function h(t)=-16t^2+72t, where t is the time in seconds since the football was kicked. How many seconds will it take the football to reach a height of 80 feet as it travels upward?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

41/17 as a decimal rounded to the nearest hundredth