Answer:
B) $19.72
Step-by-step explanation:
Sorry if I am late, hope you got a good grade:)
I got a 100 on the test for edge 2020
(1)1.3t^3 +t^2 -42t +8
(2)1.3t^3 + t^2 -6t +8
(3)1.9 t^3.+ 8.4^t^2 -42t
(4)1.9t^2 -42t + 8
I hope I got that right!!
okay, now they are all separated in columns, add the ones with the same powers (e.g (1)_ 1.3t^3 + (2) 1.3t^3 + (3) 1.9 t^3 = 4.5t^3.
let's say 12 min - 2 mins = 10 mins
and 1.4 mile - 0.9 miles = 0.5 miles
Jessica takes 10 mins to walk a distance of 0.5 miles
=> 10 mins*6 = 60 mins = 1 hour
=> 0.5 miles*6 = 3 miles
her rate is 3 miles per hour
