Answer: There about 453 students in 6th grade.
Step-by-step explanation:
68/0.15 453.3333...
453.333.. is a repeating decimal and we can't have that as a students so if has to be a whole number which is 453.
check: 453 * 0.15 = 67.95 which rounds up to 68.
So about 385 of the students chose Star Wars.
C. 20.1 and to explain you can say you squared 405 and got your answer.
1/10 of 3.0...." of " means multiply and 3.0 is the same as 3
1/10 * 3 = 3/10 = 0.3 <==
14, finding the rate of change is simple,
142-128 = 14
156-142 = 14
170-156 = 14
184-170 = 14
14+14+14+14 = 56
There are 4 integers so divide by 4
56/4 = 14
so the answer is 14