4y + 15.5 = 45.5
what is y?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Solve the equation x/4 - 5= -8 -27 -12 -7 12

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?