Evaluate the summation of 25 times 0.3 to the n plus 1 power, from n equals 2 to 10..

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?