Use a ratio box to solve this problem: after working 6 months, Gina received a raise of 25%. If Gina's previous pay was $7.20 per hour, what was her hourly pay after the raise? A raise of 25%. If G

$ 9 per hour

Step-by-step explanation:

his problem can be solved using the principle of proportionality or rule three.

Before the increase, she earned 7.2, which means that it is 100% of her salary, they tell us that she increases by 25%, now we must calculate the value of 125% that is currently earned.

Salary        % of salary

  7.2                100%

   x                  125%

then x equals:

x = (125% * 7.2) / (100%)

x = 9

x = $ 9 per hour

which means that the new salary would be $ 9 per hour.

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: