A non zero real number could be written as a/1.
When this gets reversed to be 1/a, it is the multiplicative inverse.
For every other number, you multiply by 2 and then add 3.
2 x 2 is 4, then 4 + 3 is 7, then 7 x 2 is 14, then 14 + 3 is 17...
Since she has 100 dollars already she only needs 200. since she makes 3 dollars an hour it will take about 67 hours
To evaluate an expression with a given variable means to replace the number in the place of the variable, and then solve to find what the expression equals.
Example would be: x + 3 and x = 4
x + 3
4+3 = 7
7 is the value of the expression now.
solution:
coefficient of determination = R^2 = .85 correlation coefficient, R = 0.92