Question

Jose received $30 for his birthday that he put in his piggy bank. Each week, he puts 4 more dollars in his bank so that the amount of money in dollars D in his bank is given by D = 4w + 30 where w is the number of weeks. His sister Marisol makes a table of reasonable values for w to determine how much money Andre will eventually have. If one of the values for w Marisol selects is 36, what would be her corresponding entry for D?

466
174
70
39

Answer 1

It is 174 because if you plug in 36 for w in the equation, that is what you would get.

Answer 2

please try to substitute w=36 in your formula D=4*w+30.

Answer 3

i got 174 also

Answer 4

D = 4(36) + 30. D = 144 + 30. D = 174

Answer 5

Please, medal if you appreciate my help and tag me anytime.

Answer 6

Thank you both

Answer 7

Sorry. I have to go.

Answer 8

k bye

Answer 9

thanks for your help

Answer 10

@Michele_Laino can you help

Answer 11

ok! I try...

Answer 12

ok

Answer 13

i figured it out

Answer 14

please, I conjeture the subsequent linear relationship, between D and w:
\[D=a*w+b\]

where a ad b are o coefficent to be determined as follows:

Answer 15

if w=4, we have D=58, so I can write:
(1) \[58=4a+b\]
wheres if w=15, then D=80, so we can write:
(2) \[80=15a+b\]
Now, solving the equation (1), wean write:
(3)\[b=58-4a\]
inserting quation (3) in equation (2), we have:
\[80=15a+58-4a\]
from which I get:
\[a=2\]
so your anser is the second amon those listed
@welligya...