Identify the terms, coefficients, and constants in the expression 7+x-1

Find an equation of the line perpendicular to the graph.

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Need this asap if anyone can i would be very grateful. if you could show workings that would really