r-12
substitute in r=7
so 7-12 = -5
Answer:
15 classrooms
Step-by-step explanation:
In 1 pint there are 2 cups.
Therefore, in 15 pints there are 30 cups.
Answer:
26,987.5
Step-by-step explanation:
hope it's helpful to you ☺️

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Answer:
(2,-4)
Step-by-step explanation:
When a point (x,y) is reflected across the y-axis, you need to change the sign of x. For example, if (-x,y) you need to take away the negative sign, which makes (x,y). Or, if the point is (x,y), you need to add a negative sign to the x, which makes (-x,y). So, if your point (-2, -4) is reflected across the y-axis, you need to take the negative sign off the -2, which makes (2,-4).