For every three days Rob hikes, he uses one half of a roll of film in his camera. He is planning a 24-day hike and wants to be able to take pictures each day.

How many rolls of film should Rob pack?

Rob needs 4 rolls of film

Step-by-step explanation:

We need a relationship between the number of rolls of film and days hiking.

let  

R = number of rolls

D = days hiking.

R =   rate * D

rate = R/ D =  (1/2) / 3 =  1/6

R = (1/6) * D

R = (1/6) * 24 = 4 rolls of film

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

86

step-by-step explanation:

find the area of the triangle then multiply by 2 then add the area of the parollelegram multiplied by 2