The path of a dolphin jumping out of the water can be modeled by the function h(t)=−2t2+6t−4, where h is the height of the dolphin relative to the water level in meters at time t seconds. The graph of h(t) is given below. A function is graphed on a four quadrant coordinate plane. The horizontal t-axis and the vertical h of t-axis go from negative 1.5 to 4.5 in increments of 1. A U-shaped curve that opens downward has a vertex at approximately (1.5, 0.5) and passes through the points (1, 0) and (2, 0).

Which of the following statements is correct about the graph of h(t)?

The two zeros of h(t) are at (−1, 0) and (−2, 0).

The y-intercept of h(t) is at (−4, 0).

The axis of symmetry of h(t) is t=−32.

The vertex of h(t) is at (32, 12).

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.