Plumber X charges a flat rate of $41.00 for a visit. Plumber Y charges no flat rate but charges $46 per hour. The total amount they both earned is $732.00. If Plumber Y works for 7 hours, how many visits did Plumber X make?

9514 1404 393

  10

Step-by-step explanation:

The total earnings for X visits by plumber X and Y hours worked by plumber Y is ...

  41X +46Y = total earnings

  41X +46(7) = 732 . . . . . for the given values

  41X = 410 . . . . . . . . . . . subtract 322

  X = 10 . . . . . . . . . . . . . . divide by 41

Plumber X made 10 visits.

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2