The resistance, R(in ohms), of a wire varies directly with the length, L(in cm), of the wire, and inversely with the cross sectional are, A(in cm^2). A 500cm piece of wire with a radius of 0.2cm has a resistance of 0.025 ohm. Find an equation that relates these variables. Please help!!

Question 5 spring semester final exam math evaluate

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4