Appreciate the support!

problem:
at the end of the day, brooke had $138.75 in her checking account. she had made a deposit of $115.07 and written checks totaling $176.94. how much did she have in her checking account at the beginning of the day?

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x