a class is having their picture taken. the photographer positions himself 21 feet from the center of the row of students. When the the photographer looks at the last student at either end of the row, the photographer must turn 45 degrees from the center in either direction

24

Step-by-step explanation:

tbh I am not sure if this is right but here

He has to pay $ 2.76 for the yogurt.

Step-by-step explanation:

Given data

Cost of each ounce = $ 0.24

Vanilla yogurt = 6.5 ounces

Strawberry yogurt = 5 ounces

Total ounces = 6.5 + 5 = 11.5 ounces

Now Total cost of yogurt = 11.5 × 0.24

Now Total cost of yogurt = $ 2.76

Therefore he has to pay $ 2.76 for the  yogurt.