Homework #19 8th Grade Milestone Review

• 36

• 729

• 243

• 81

Write 0.000045 in scientific notation.

• 4.5 x 10^-3

• 4.5 x 10^-5

• 4.5 x 10^-4

• 4.5 x 10^-6

John is planning to build a straight path in his garden from the cherry tree at point (2, 3) to the fountain located at point (5, 9). Calculate the slope of this path.

• 4

• 5

• 7

• 2

A landscaper is designing a straight path in a park that has a slope of 2 and passes through a specific point in the park located at (3, 4). What is the equation of the path?

• y = 2x - 2

• y = -2x + 10

• y = 2x + 2

• y = 4x - 8

Determine if the relation y = 2x - 1 is a function.

• No, y = 2x - 1 is not a function.

• Yes, y = 2x - 1 is a constant function.

• Yes, y = 2x - 1 is a linear equation.

• Yes, y = 2x - 1 is a function.

Imagine you are helping a friend calculate the total cost of their shopping cart. If the cost of each item is represented by 3x + 2, what would be the total cost of 4 items?

• 14

• 20

• 12

• 18

• x = 60

• x = 168

• x = 42

• x = 2520

• 1000

• 100

• 1,000,000

• 10,000

Imagine you're tracking the elevation change as you hike up a mountain. The elevation change in meters, relative to your starting point, can be described by the equation y = -2x + 6, where x is the time in hours. What is the elevation change at the starting point of your hike?

• -2

• 0

• 6

• 3

A scientist measures a bacteria culture and finds its mass to be 0.007 grams. How can this mass be represented in scientific notation?

• 7 x 10^-2

• 7 x 10^-3

• 7 x 10^-4

• 7 x 10^3