Math problem:

43 ÷ (7 − 3) × 2.

21.50

Step-by-step explanation:

43 ÷ (7 − 3) × 2

According to order of operations you would do 7 - 3 first which gets you to 4.

43 ÷ 4 × 2

Now you would do 43 ÷ 4 which is 10.75 so next...

10.75 × 2

You should get an answer of 21.50

Hope this helps :D

The answer is in the image 

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

The answer is in the image 

The total nom of  code that can be used is equal to 5+3 = 8

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

The solution is given in the image below

Here,

tip=18%of $32

tip=(18/100)*32

=0.18*32

=$5.76

Total payment=32+5.76=$37.76