Answer:
a) L = 4p
b ) 24 light bulbs
Step-by-step explanation:
Robin is buying energy-efficient light bulbs. Each package of 4 light bulbs costs $13. She has a coupon for $5 off her total purchase.
Each package of 4 light bulbs costs $13.
a.Write an equation to determine the total number of light bulbs, L, for p packages.
1 package = 4 bulbs
L = 4p
Where p = number of packages
b) Then determine the number of light bulbs Robin will get if she buys 6 packages. Show your work.
L = 4p
p = 6 packages
L = 4 × 6
L = 24 light bulbs
There are two ways to work this out: normal variables or using "imaginary" numbers.
Normal variables:
Imaginary numbers:
Using the result from earlier:
Now since
, then the expression becomes:
Answer:
d1 = 192
d2 = 192
Step-by-step explanation:
step 1
From the imformation given, the distance is the same
so from the table
d1 = 64t
d2 = 48(7-t)
the distance is the same, it means
d1 = d2
therefore we can get the time(t) from here
64t = 48(7-t)
64t = 336 - 48t
collect like terms
64t+48t = 336
112t = 336
t = 336/112
t = 3
substitute t into d1 to get the distance
d1 = 64t
d1 = 64 × 3
d1 = 192
Note, d1 = d2
d2 = 192 too
I did it but I cant upload the image ...
the answer is 5x + 3 remainder 8
Edited: Ok, managed to upload it now.
Total amount she wants to raise = $3200
Amount she'll get for each kilometer = $35
So, number of kilometers she need to run
= Total amount she wants to raise/Amount she'll get for each kilometer
= $3200/$35
= 91.42....
Since her sponser is will donate only for whole kilometers she'll have to run 92 km.