Answer:
x > -1
Step-by-step explanation:
-3x + 15 < 18
Subtract 15 from each side
-3x + 15-15 < 18-15
-3x < 3
Divide each side by -3, remembering to flip the inequality
-3x/-3 > 3/-3
x > -1
45 percent because it's purpose is not to make light, but heat. Since that is excess wasted energy, you would subtract the wasted energy from the units of energy used for the desired task (50-5) and it would give you 45
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