The school band is selling items to raise $9,500 for a trip. For each item sold, the band's profit is a percent of the selling price, as shown in the table. Martha has sold 5 CDs, 6 calendars, and 4 T-shirts. How much profit has the band earned from Martha's sales?

1. Mark's profit = $102.40

2. Jamal's profit = $156

3. Bao raised more money, making a profit of $208 than Linda's $180.  The difference in the amounts the students raise was $28.

4.  Flutists raised more money than Trumpeters, with the difference as $256.50

5. Band's profit from calendar sales = $4,256

Step-by-step explanation:

a) Data and Calculations:

Item                  Selling Price      Band's Profit    Band Fundraiser

CD Calendar             $16                  45%               100

Calendar T-Shirt       $20                 38%                 96

T-Shirts dcal T          $10                  52%                 40

Total                                                                        236

1. Martha's sales:

CD profit = 45% x $16 x 5 =     $36.00

Calendars = 38% x $20 X 6 = $45.60

T- Shirts = 52% x $10 x 4 =      $20.80

Total profits =                         $102.40

2. Jamal's sales:

CD profit = 45% x $16 x 6 =     $43.20

Calendars = 38% x $20 X 8 = $60.80

T- Shirts = 52% x $10 x 10 =    $52.00

Total profits =                         $156.00

3. Bao and Linda

                     Bao            Linda

T-shirts          40

CDs                                   25

Price             $10              $16

Total sales  $400          $400

profit  %         52%         45%

Profit margin $208        $180

Difference in profit = $28

4.                        Flutists' Goal

Goal                   18% of total

Amount raised  $1,710 = 18% of $9,500

                        Trumpeters' Goal

Goa in % =         85% of flutists' goal

= 85% of $1,710 = $1,453.50

Difference in amount raise = 15% of $1,710 = $256.50

5. Total money raise = $9,500 x 112% = $10,640

Calendar's profit = 40% of $10,640 = $4,256

2

step-by-step explanation:

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this