Solve x + 2 1/2

< 8.(1 point)
Responses

x < 10 1/2
x < 10 and 1 half

x < 6 1/2
x < 6 and 1 half

x < 5 1/2
x < 5 and 1 half

x < 4 1/2
x < 4 and 1 half

5 answers

To solve the inequality \( x + 2 \frac{1}{2} < 8 \), we first convert \( 2 \frac{1}{2} \) to an improper fraction or a decimal.

\( 2 \frac{1}{2} = 2 + \frac{1}{2} = 2 + 0.5 = 2.5 \) or \( \frac{5}{2} \).

Now, modifying the inequality:

  1. Starting with the original inequality: \[ x + 2.5 < 8 \]

  2. Subtract \( 2.5 \) from both sides: \[ x < 8 - 2.5 \]

  3. Simplifying the right side: \[ x < 5.5 \]

The solution in decimal form is \( x < 5.5 \), which can also be written as "x < 5 and 1/2".

Thus, the correct response is:

x < 5 1/2 (x < 5 and 1 half).

Emma wants to buy some snacks that cost $3 each. She has no more than $18 to spend. Which inequality represents the maximum number of snacks, s
, Emma can buy?(1 point)
Responses

3s≥18
3s≥18

3s≤18
3s≤18

s+3≤18
s+3≤18

s≥3

To determine the maximum number of snacks \( s \) that Emma can buy, we need to represent the situation with an inequality based on the cost of the snacks and the total amount she has to spend.

  1. Each snack costs $3.
  2. Emma has no more than $18 to spend.

The total cost for \( s \) snacks would be \( 3s \). Since she can't spend more than $18, we can write the inequality as:

\[ 3s \leq 18 \]

This indicates that the total cost of the snacks must be less than or equal to $18.

So the correct inequality representing the maximum number of snacks Emma can buy is:

3s ≤ 18.

Use the image to answer the question.

Willow solved an inequality and graphed the solution on the number line. Which of the following inequalities did she solve?

(1 point)
Responses

x - 213
< 216
x - 2 and 1 third < 2 and 1 sixth

x + 1.75 ≤ 5.75
x + 1.75 ≤ 5.75

x + 212
< 212
x + 2 and 1 half < 2 and 1 half

x - 1.5 ≤ 3

To determine which inequality Willow solved based on the provided information about the graph on a number line, we would typically need to reference the graph to see whether it has an open or closed circle, and the direction of the shading (to the left or right of a point).

Since I can't see the image or the number line graph you're referring to, I will provide guidance on how to analyze each inequality to find the correct solution.

  1. x - 213 < 216

    • Solving gives: \( x < 216 + 213 \) or \( x < 429 \).
  2. x - 2 and 1 third < 2 and 1 sixth

    • Converting to improper fractions: \( x < \frac{7}{3} + \frac{13}{6} \)
    • This is another inequality with a specific numerical solution.
  3. x + 1.75 ≤ 5.75

    • Solving gives: \( x ≤ 5.75 - 1.75 \), so \( x ≤ 4 \).
  4. x + 212 < 212

    • This simplifies to \( x < 0 \).
  5. x - 1.5 ≤ 3

    • Solving gives: \( x ≤ 3 + 1.5 \), so \( x ≤ 4.5\).

To find the correct inequality:

  • Check for signs of the inequality: If the graph has a closed (filled) circle, it indicates "less than or equal to" (≤). If it has an open circle, it indicates "less than" (<).
  • Check the direction of shading: If the arrow or shading goes to the left, that indicates \( x \) is less than a value. If it goes to the right, that indicates \( x \) is greater than a value.

By comparing the numerical solutions derived above with the graph (which you would observe), you can determine which inequality matches the graph.

If you can provide more specifics about the graph (like if it has open/closed circles, or what values are marked), I would be able to give a more precise answer.