Answer:

Step-by-step explanation:
2 4/5 + 2 3/5 = 4 7/5 = 4+1+2/5 = 5 2/5
D = r x t
replace the d with 84 and replace the t with 6 hours
divide 84 by 6 = 84/6
get the quotient 14
84 = 14 x 6
Please see the pic. I'd solved in it and I'm so sorry for cuttings.
Answer:
A. 3
Step-by-step explanation:
f(x) = 2x - 5
f(4) = 2(4) - 5
f(4) = 8 - 5
f(4) = 3