Answer:
We suppose that a is the old price in cents
the total cost of 9.20 $ equals 920 cents
so we have 20 liters bought with the old price (a) and 10 liters with the new price (a + 2). This is translated into this equation where a is the old price therefore our quest to be answered
20 xa + 10 x (a + 2) = 920 (cents)
20 xa + 10 xa + 20 = 920
30 xa + 20 = 920
30 xa = 920 - 20
30 xa = 900
a = 900: 30
a = 30 (cents)
therefore the old price for 1 liter of petrol is 30 cents
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Associate of multiplication I think
.10 of a minute................
Answer:
b
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
To solve this problem, you simply plug 2 in for x in the equation of f(x):
f(2) = 2 + 4 = 6
Thus, the answer is 6.
Hope this helps!
