Populations generally increase as an exponential function. In a short period of time, it could be approximated as linear (first degree). Depending what your teacher expects,
Linear model:
rate of increase = (y2-y1)/(x2-x1)=(103-98)/(2001-1994)=5/7 million per year.
From 2001 to 2018, there are 17 years. So add 17(5/7) millions to population of 2001.
exponential model:
Over 7 years, the ratio of populations is 103/98, so the annual ratio is (103/98)^(1/7)=1.007134, about 0.7134%.
Use the compound interest formula to find the population growing at the same rate from 2001 for 17 years:
population at 2018 = 103 millions * 1.007134^17 which is a little over 116 millions.
I am guessing this is an expression that needs to be simplify or factorise or both.
If the expression goes like this and I repeat :
2 1/2 x - 3/4 (2x+5) + 3/8
5x/2 - 3x/2 - 15/4 + 3/8
5x/2 - 6x/2 - 27/8
-x/2 - 27/8
-(4x + 27)/8 Answer:
Please comment me back if I got the question incorrect.
3a + 4bc - d = 5a - 8j
<em><u>Add d to both sides.</u></em>
3a + 4bc = 5a - 8j + d
<em><u>Subtract 4bc from each side.</u></em>
3a = 5a - 8j + d - 4bc
<em><u>Subtract 5a from both sides.</u></em>
-2a = -8j + d - 4bc
Divide both sides by -2
a = 
