The graph shows the speed of a minibus, in metres per second, during the first 40 seconds of a journey.

Work out an estimate for the distance
travelled by the minibus in the first
40 seconds.
Use 4 strips of equal width.

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Afootball is throw by a quarterback to a receiver