What is f(x)= f(x-1)+8 with f(1)=5 as an explicit equation please

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Identify the slope an intercept of the following linear equation y = 1/5x - 6 a. slope: 1/5; intercept: -6 b. slope: 5; intercept: -6 c. slope: -1/5; intercept: 6 d. slope: 1/5; intercept: 6

Which equation represents h for right triangle abc