Question
Enquire plans a diet for his dog, river. River Consumes between 510 and 540 calories per day. If river eats 1.5 servings of dog food each day, how many treats can she have?
Hint:
If two real numbers or algebraic expressions are related by the symbols “>”, “<”, “≥”, “≤”, then the relation is called an inequality. For example, x>5 (x should be greater than 5).
If the symbol is (≥ or ≤) then you fill in the dot and if the symbol is (> or <) then you do not fill in the dot.
The correct answer is: River can have 2 to 4 treats per day.
Given that 1 serving has 320 calories and 1 treat has 15 calories
It is given that River is given 1.5 servings in a day
Calories in 1.5 serving = 1.5 × 320 = 480 calories
Let x represent the number of treats Louie can have each day.
So, Total calories taken by River = 15x + 480
It is given that River can consume between 510 and 540 calories per day
So, 510 ≤ 15x + 480 ≤ 540
Solving the inequality
510 ≤ 15x + 480 ≤ 540
Subtracting 480 on all sides
510 - 480 ≤ 15x ≤ 540 - 480
30 ≤ 15x ≤ 60
Dividing 15 on all sides
2 ≤ x ≤ 4
Final Answer:
Hence, River can have 2 to 4 treats per day.
Subtracting 480 on all sides
Dividing 15 on all sides
Final Answer:
Hence, River can have 2 to 4 treats per day.
Related Questions to study
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Example
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Solve for x: 3 x + 2 < 14 and 2 x – 5 > –11
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Let's see x: 2 x + 7 < –11 or –3 x – 2 < 13. Solve each inequality on its own. Combine the solutions, i.e., determine the union of the solution sets for each inequality phrase since the connecting word is "or." Both x < –9 and x > -5 denote all the numbers on the left of those two particular values. Written as follows is the solution set:
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Solve the compound inequality 5x+7 < 13 or -4x+3 > 11. Graph the solution.
A Compound inequality is a connection between two inequality statements by the words "or" or "and." The conjunction "and" denotes the simultaneous truth of both statements in a compound sentence. It is the point where the solution sets for the various statements cross over or intersect. The conjunction "or" denotes that the entire compound sentence is true as long as either of the two statements is true — the union or combination of the solution sets for each particular statement.
Let's see x: 2 x + 7 < –11 or –3 x – 2 < 13. Solve each inequality on its own. Combine the solutions, i.e., determine the union of the solution sets for each inequality phrase since the connecting word is "or." Both x < –9 and x > -5 denote all the numbers on the left of those two particular values. Written as follows is the solution set:
{ x| x < -9 or x > -5}