The expression 18h+100p represents the amount (in dollars) than an insurance salesperson earns for working h hours and selling p policies how much does the sales person earn for working 10 hours and selling 3 polices

He earns $480.

Step-by-step explanation:

18h + 100p

18(10) + 100(3)

180 + 300

480

Time taken by both is 3 hours and 44 minutes.

Step-by-step explanation:

Working alone, Irina can paint a certain room in = 8 hours

Working alone, Paulo can paint the same room in = 7 hours

Let the time required when they work together  be = t

Let the completed job be = 1

Both will do a fraction of the job and the two fractions add up to 1.

Now solving this we get

t= 3.73 hours

This becomes 3 hours and 0.73(60)=43.8 ≈ 44 minutes.

Therefore, time taken by both Irina and Paulo is 3 hours and 44 minutes.