Car-rental companies
6. What is the cost per day of renting a car from A-1?
$21.98
7. Analyze Relationships Which company offers the best deal? Why?
Rent-All, because the total cost is $111.00 for 6 days. For the same amount of days, you have to pay $131.88 for A-1 Rentals, and $115.50 for Car Town.
Skydiving thing
8. Critique Reasoning A skydiver jumps out of an airplane. After 0.8 second, she has fallen 100 feet. After 3.1 seconds, she has fallen 500 feet. Emtiaz says that the skydiver should fall about 187.5 feet in 1.5 seconds. Is his answer reasonable? Explain.
His answer is not reasonable. The rate that the skydiver descends increases, it isn't proportional. Emtiaz guessed that the rate was proportional.
Babysitting job thing
9. Explain why the relationship between how much Steven charges and time is a proportional relationship.
They're proportional because the ratios are equal. 31.25 divided by 5 has the same quotient as 50 divided by 8. They both equal 6.25.
10. Interpret the Answer Explain what the constant rate of change means in the context.
I found the rate by dividing how much he charged by the hours he worked. He charges 6.25 per hour.
11. Write an equation to represent the relationship. Tell what the variables represent.
6.25h = c. The h represents how many hours he worked and the c is how much he charges.
12. How much would Steven charge for 3 hours?
18.75
