Answer:
7<em><u>f</u></em>
Step-by-step explanation:
You move 7 to the left of <em>f. </em>
This makes the exact value of <em>f</em>(7), 7<em>f</em>.
Answer: 3 1/3 hours
Step-by-step explanation:
Tina rate: 1/5 job/hr
Together rate: 1/2 job/hr
Tyra rate: 1/x job/hr
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Equation:
rate + rate = together rate
1/5 + 1/x = 1/2
2x + 10 = 5x
3x = 10
x = 3 1/3 hrs (time for Tyra to do the job alone)
9. Is 37 since you take PR+QR
10. Is 7 since it's PR-QR
11. Is 6 since you take PR-PQ
Answer: s = 2/3
Step-by-step explanation: s3 + 6 = 8
3s + 6 = 8
(3s + 6) + (-6) = 8 + (-6)
s = 2/3
