C. 10r-3
Because 2r+5=7, the minus 6 and 7 which gives you 1 then minus 4 and 1 witch is 3 then you do 10r-3 and it will get you to 2r+5=7 again. I hope this helped!
Answer:
v=0.79x+3.99
f=1.89x+5.49
combined cost: 2.68×+9.48
About 667 miles, by using the Pythagorean Theorem a^2 plus b^2 = c^2 the c in this equation if the distance so once u find it you end up with 667 miles
Answer:
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Step-by-step explanation:
