Answer:
20 students
Step-by-step explanation:
If the class decreased by 15%, the students that she has now (17) represents a percentaje of:
100% - 15% = 85%
so<u> the 17 students are 85% of what she had</u>:
Students Percentage
17 ⇒ 85%
and we are looking for how many students she had 2 years ago, thus we are looking for the <u>100%</u> of students (the original number of studens). If we represent this number by x:
Students Percentage
17 ⇒ 85%
x ⇒ 100%
and we solve this problem using the <u>rule of three</u>: multiply the cross quantities on the table( 17 and 100) and then divide by the remaining amount (85):
x = 17*100/85
x = 1700/85
x=20
2 years ago she had 20 students
Part A: Coefficient: either 7.50 or 0.20
Part B:
7.50 (25) + 0.20 (300) + 40
187.50 + 60 + 40 = $287.50
Part C: After her raise, the first term will change from 7.50h to 9h
Answer:
gradient 1/2, y-intercept 9
Step-by-step exp
D is the answer your looking for.
