Hi can I have some help with these math questions please?

A pomegranate is thrown from ground level straight up into the air at time t = 0 with velocity 73 metres per second. Its height in metres at t seconds is h(t) = (-5t + 73)t. Find the time it hits the ground and the time it reaches its highest point. Include units in your answers. 1. Hits the ground when t S 2. Reaches highest point when t S 3. Maximum height = X CConsider a circle of radius 4 and a point P rotating around it, as shown in the figure to the left, below. 2 P o (t) 10 ( t ) 1 NO The angle 0 (theta), in radians, is given as a function of time t, by the graph in the second figure. 1. What is the value of 0 when t = 2? Answer: 2. Find the coordinates of P when t = 2. Coordinates = 3. Does P ever reach the point (0, 4)? Answer: We don't have enough informationSAVE Find the half-life (in hours) of a radioactive substance that is reduced by 18 percent in 84 hours.f(I) A Find the equation of the line & illustrated in the figure above, given that f(x) # 10" and the point A is at x = log(3370). Answer: the equation of & is ac Note : To enter the log base 10 of a, type log(a).he half-life of radioactive strontium-90 is approximately 31 years. In 1964, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 7 percent of the original amount absorbed remains? nput an expression below X CLOSE