In a survey 7 out of 8 dentists recommend a ProTooth toothbrush. Based on this information, which can the toothbrush company pre
1 answer:
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Answer:
Step-by-step explanation:
We are given the two functions:
And we want to find:
Recall that:
Substitute and simplify:
In conclusion:
Answer:
30/7
Step-by-step explanation:
So we have the equation:
Combine like terms:
Add:
Add 28 to both sides:
Divide both sides by 7:
So, our answer is 30/7
Or approximately 4.2857 :)