Joe earns $40 for playing music on Saturday nights at the local coffee house. He makes an average of $3.25 in tips per hour. Write the function of Joe's earnings and solve for how much he would make after 5 hours.

y = 3.25x + 40; $43.25

y = 3.25x + 40; $56.25

y = 40x + 3.25; $58.25

y = 40x + 3.25; $203.25

Question

Joe earns $40 for playing music on Saturday nights at the local coffee house. He makes an average of $3.25 in tips per hour. Write the function of Joe's earnings and solve for how much he would make after 5 hours. 

 y = 3.25x + 40; $43.25 

 y = 3.25x + 40; $56.25 

 y = 40x + 3.25; $58.25 

 y = 40x + 3.25; $203.25

the_fizicx99 · Answer

f() = 40 + 3.25x ; 56.25

the_fizicx99 · Answer

f(x)* 

f(x) is a fancy way of saying y