Core Bite Round #11 (101 - 110)

Which are rational numbers?

Answer explanation

Car X travels 120 miles on 11 gallons of gas. Car Y travels 100 miles on 9 gallons. Which car gets the better gas mileage?

• Car X

• Car Y

Answer explanation

Car X - 120 miles on 11 gallons

Car Y - 100 miles on 9 gallons

Take the miles and divided it by the gallons so the unit rate is one.

Car X - 10.9 miles per gallons

Car Y - 11.1 miles per gallons.

Mathematical Equivalence

ON

Answer explanation

Is the relationship a function?

• Yes

• No

Answer explanation

Look at the table showing the number of bacteria, y, present as a function of time, x.

What is the rate of change and the initial value?

• Rate of Change: 18

  initial value: 3

• Rate of Change: 3

  initial value: 18

• Rate of Change: 1

  initial value: 1

• Rate of Change: 3

  initial value: 3

• No

• Yes

Answer explanation

Would a scatter plot of one's income and month of birth show...

• positive relationship

• negative relationship

• no relationship

A taxi charges a flat rate fee of $4.00 and $0.85 per mile. Define the intercept.

Mathematical Equivalence

ON