Can someone answer this question please answer it correctly if it’s correct I will mark you brainliest

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.