Roxanna earns $18 per hour.
If Roxanna earns $72 in 4 hours, then the equation to find how much she earns per hour is:
72/4 = x
x = 18
Hope this helps! Feel free to ask questions.
Answer: 18 = V
Step-by-step explanation: What you do is take the answer and subtract 8 from it. That's V! You can even check it by putting 18 over the V and adding.
10 ≤ x ≤ 30, x < 2y, x < 40.
Solution:
Given x is the number of graphing calculators produced daily and
y is the number of scientific calculators produced daily.
Step 1: A company produce atleast 10 and not more than 30 graphing calculators per day.
⇒ 10 ≤ x < 30
Step 2: Each day, the number of graphing calculators cannot exceed twice the number of scientific calculators produced.
⇒ x < 2y
Step 3: The number of scientific calculators cannot exceed 40 per day.
⇒ x < 40
Hence, the constraints are 10 ≤ x ≤ 30, x < 2y, x < 40.
