Question

If D varies directly with t and D is 105 when t is 3, find D when t is 8.

a. 35
b. 280
c. 840
plz help

Answer 1

Answer: 280

Step-by-step explanation:

d varies directly with t means

d=kt

105=3k

divide both sids by 3

35=k

d=35t

when t=8

d=35(8)

d=280

thus 280 is the answer

Answer 2

d varies directly with t means
d=kt

105=3k
divide both sids by 3
35=k

d=35t
when t=8
d=35(8)
d=280

B