Robbie was given $80 to spend at the Fair. His admission to the park costs $15.50 and each ride cost $5. He anticipates the cost of food at the fair will be $25. What is the maximum number of rides he can take at the Fair?

the maximum number of rides he can take at the Fair is 7.

Step-by-step explanation:

Let x represent the number of rides that he wants to take at the Fair.

His admission to the park costs $15.50 and each ride cost $5. This means that the cost of x rides would be expressed as

15.5 + 5x

He anticipates the cost of food at the Fair will be $25. This means that the expression for the total amount that he would spend is

15.5 + 5x + 25

If Robbie was given $80 to spend at the Fair, it means that

15.5 + 5x + 25 = 80

5x + 40.5 = 80

5x = 80 - 40.5 =

5x = 39.5

x = 39.5/5

x = 7.9

Since the number of rides cannot be a fraction, then the maximum number of rides he can take at the Fair is 7

step-by-step explanation:

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497