Which of the following expressions are equivalent to 7.2 - 3.6?
(a 7.2 + 3.6 )
(b 7.2 + - 3.6 )
(c 7.2 + (-3.6)
(d 7.2 - - 3.6)

B and C

Step-by-step explanation:

7.2 - 3.6 is the original equation

B states that 7.2 + -3.6 is equivalent, and it is right because and positive and negative multiplied by each other gives a negative

C states that 7.2 + (-3.6) is equivalent, and it is also correct because it would still be a negative number because its subtracting

A and D would just add up so it wouldn't be equivalent to 7.2 - 3.6

Wilma earned $407.25 for 43.5 hours.

Step-by-step explanation:

Wilma makes $9.00 per hours in her regular work week and time and a half (1.5) for hours over 40. She worked 43.5 hours.

Her adjusted hours are 40 + 3.5(1.5) = 45.25 hours this week.

She will be paid $9 for each hour, so 45.25(9) = 407.25