Answer:
8%
Step-by-step explanation:
let,
this year population of students (pt)= 195
last year population of students (p)= 210
time(t)= 1 year
Population Change( R)= ?
we have,
pt= p( 1 - R/100)^t
195 = 210 ( 1 - R/100)^1
0.92= 1 - R/100
0.92-1= R/100
- 0.08 = - R/100
R= 0.08×100
R= 8%
Answer:
1st one and 4th one
Step-by-step explanation:
Hope this helps if it does plz mark me brainliest
9:8 is the equivalent ratio
8 months; $740
75x+140=90x+20
Find x then plug it in to find the cost