Tracy is training for a race. She runs 2 1/2 on a track, and each lap is 1/2 of a mile. Starting at 0, draw a line segment the total numbers of miles that Tracy runs.

78.59 is the mean

step-by-step explanation:

answer: sorry i can't you.

step-by-step explanation:

a. is correct

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1