A cell phone company offers its customers a monthly plan that cost $55 per month plus 0.08 for each minute used

The equation is y= 0.08 x+55

Step-by-step explanation:

Let's use total cost y= Variable cost + fixed cost.

Here fixed cost =$55

And variable cost  for each minute =0.08

That's variable cost for x minutes =0.08

So, total cost y=0.08 x+55

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5