i really need help with my homework so i can graduate in time. i have only 3 questions that i need help with because math is my weakest subject. so can someone please help me.

Question

1. the formula for converting centigrade temperature to Fahrenheit is F = 9/5 C + 32. what is the difference in Fahrenheit degrees between a temperature of 0 C and a temperature of 15 C?
a.9 F
b.27 F
c.41 F
d.59 F
my answer:B 27 F

2. Of the 30,000 cars assembled annually in the automobile plant, 96.6% pass a routine assembly examination and 98.3% of those pass the final quality control inspection. how many are rejected?
a.1,323 cars
b.1,475 cars
c.1,513 cars
d.1,622 cars
my answer:D 1,622

3, about a third of the blueberry crop was ruined by a sudden frost. a sixth of the undamaged blueberries spoiled on the way to market. how much of the original blueberry crop made it to market unspoiled and undamaged?
a.1/9
b.1/3
c.5/9
d.7/9
my answer:C 5/9

Answer 1

A. Your answer is correct

B. Wrong answer 30,000*0.966*0.983 pass the inspections. How many are left?

C. Correct.
(2/3)*(5/6) = 10/18 = 5/9

Answer 2

A.
Converting from Celsius to Fahrenheit:
multiply the Celsius by 9/5 and add 32°.
15°C
= 15*9/5 + 32
= 27 + 32
= 59°F