When a research satellite began losing power, Nova, Luna, and Emek hurried to the control room to diagnose the problem. The system displayed the output power as 3x + 8, where x represented the energy setting. A sensor reported that x = 12, so they evaluated the expression to find the current output. They also checked another panel showing the expression 2x + 15 and compared the two results. Using the correct evaluation, they selected the proper settings, restored the satellite's power, and safely continued the mission.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
Replace x with 12 and follow the order of operations.
The satellite output power was represented by 3x + 8. If x = 12, what is the output power?
36404448Correct! 3 * 12 + 8 = 36 + 8 = 44.
Substitute 12 for x and multiply before adding 8.
Next🎉 Congrats! You got this question!
Hint
Replace x with 12 in the expression and calculate.
The second panel showed the expression 2x + 15. If x = 12, what output power value did the second panel show?
Correct! 2 * 12 + 15 = 24 + 15 = 39.
Remember to multiply 2 by 12 before adding 15.
Next🎉 Congrats! You got this question!
Hint
Find the value of each expression first, then compare them.
Using x = 12, the control team compared the two expressions 3x + 8 and 2x + 15. Which statement is correct?
The second expression is larger by 5The two expressions have the same valueThe first expression is larger by 5The first expression is larger by 15Correct! The values are 44 and 39, so the first expression is larger by 5.
Evaluate both expressions with x = 12 before comparing the results.
Next🎉🎉🎉🎉🎉🎉🎉🎉
🎉 Congrats! You finished this challenge set!
