In 2003, the population of an african country was about 15.7 million people, which is 1 million more than 3 times the population in 1950.
enter and solve an equation to find the approximate population p (in millions) in 1950.
an equation is .
the approximate population in 1950 was million people.

Part 1) An equation is 15.7=3x+1

Part 2) The approximate population in 1950 was 4.9 million people

Step-by-step explanation:

Let

x > the population in 1950 in million people

y > the population in 2003 in million people

we know that

y=3x+1 > equation A

y=15.7 > equation B

substitute equation B in equation A and solve for x

15.7=3x+1

3x=15.7-1

3x=14.7

x=4.9

therefore

The approximate population in 1950 was 4.9 million people

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

57.09 minus 7.0435 equals

step-by-step explanation:

just subtrach them both and u get the answer of 50.0465