Answer: The expression representing the amount of money spent is
by Emily.
Step-by-step explanation:
Since we have given that
Let the cost price of per pair of sandals be 's'
Let the cost price of per pair of boots be 's+30'.
Number of pairs of boots = 2
Number of pairs of sandals = 3
Total cost would be

Hence, the expression representing the amount of money spent is
by Emily.
Answer:
The graph in the attached figure
Step-by-step explanation:
we have

isolate the variable y

Divide by -4 both sides
Remember
When you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol
so

The solution of the inequality is the shaded area above the dashed line 
The slope of the dashed line is positive m=1/4
The y-intercept of the dashed line is (0,0)
The x-intercept of the dashed line is (0,0)
using a graphing tool
The graph in the attached figure
He first travels 15 floors. He then travels 12 floors, to get to the 3rd floor. He finally travels 35 floors, for a total of 62 floors.
Step-by-step explanation:
if x=4, then -4x4+4y=16
so, -16+4y=16
so, 4y=16+16=32
so, y=32/4
so, y=8
and x=4