Pls help urgently extra points and mark brainlist

It is the last one.

Step-by-step explanation:

first one:4 and 10 is not prime, but still equal 80

So, turn 4 and 10 into prime numbers

1. 10=2x5

2.4=2x2

3. 80's prime factorzation: 2x2x2x2x5

i don't have the answer rn but go to math papa. it shows the steps and the answer. hope this : )

step-by-step explanation:

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.