Which calculations performed on the calculator are reasonable, using estimation? check all that apply.

2.8 × 210 = 588
50 di 2/5=5
89 × 0.18 = 160.2
1/5 di 1/5= 0.04
3/4 x 5 = 3,75

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

What is the rate for one gallon of gasoline