Looking Forward, Looking Back Complete these sentences using the two cost options for gas from earlier in the section. Cost with Option 1: C-3.65g 5.50
Cost with Option 2: C-3.85g
a. As the number of gallons of gas increases by 1, the cost for Option 1 increases by
b. As the number of gallons of gas increases by 1, the cost for Option 2 increases by
c. What is the slope of the line for Option 1? Write it as a fraction with units.
d. What is the slope of the line for Option 2? Write it as a fraction with units.
e. Where does the slope appear in the cost formulas?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.