An automobile is driven on a straight road, and the distance traveled by the automobile after time t=0 is given by a quadratic function s, where s(t) is measured in feet and t is measured in seconds for 0≤t≤12. Of the following, which gives the best estimate of the velocity of the automobile, in feet per second, at time t=8 seconds?

23. public and private investment in infrastructure include all of the following except a) worker knowledge and skill development b) telecommunication systems, internet provider systems, and power distribution systems c) highways, transit systems, airports, harbors, and educational facilities d) fire departments, police departments, and public safety systems e) water systems, wastewater treatment systems, and navigational systems

Here is a quote from an npr news article: “on average, working-age adults were eating about 78 fewer calories per day in 2010, compared with five years earlier. the new report is based on data from the national health and nutrition examination survey, which collects details on eating habits and other health-related information from a nationally representative sample of about 10,000 people in the u.s.” which of the following is true about the numerical value 78? a. it is an anecdote. b. it is a parameter. c. it is a simulation. d. it is a statistic.

Which two organisms in the food web would most likely be affected by a decrease in producers, or the plants, at the bottom base of the food web?