Find the sum of the series. for what values of the variable does the series converge to this sum?
1+(x/2)+(x^2/4)+(x^3/8)+

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

What line represents the relationship between r and s