Which simpler problems could be calculated to solve this problem?

Richard bought 3 bottles of water for $1.50 each and a tray of sandwiches for $20. He gave the cashier an 8% tip. How much change did Richard get back from $30?

A.
Calculate the total cost of the 4 items. Calculate the tip. Add the tip to the price of each item. Calculate the change.

B.
Calculate the total cost of the 4 items. Calculate the tip. Add the tip to the total cost of the items. Calculate the change.

C.
Calculate the tip of each item. Calculate the total of the tips. Add the tip to the cost of each item. Calculate the total cost. Calculate the change.

D.
Calculate the tip. Calculate the total cost of 4 items. Add the tip to the cost of each item. Calculate the change.

Option B

Step-by-step explanation:

We first need to calculate the total cost of all the four items then calculate the tip of the total cost. After this we add the tip to the cost of items and calculate change as follows.

Total cost of items

Cost of bottles =3*1.5=$4.5

Cost of sandwitches= $20

Total cost= 20+4.5=$24.5

Tip=0.08*24.5=$1.96

Total=24.5+1.96=26.46

Change= 30-26.46=$3.54

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation: