Solve the real-world situation by using the substitution method.
the length of a rectangular room is 7 feet more than its width. the perimeter of the room is 70 feet.
let l represent the length of the room and w represent the width in centimeters.
l=w +7
the system of equations
70 = 2 + 2w cano
can be used to represent this situation.
what are the room's dimensions?

Yuto and hila attempted to solve the same inequality. their work is shown below. which statement is true about the work shown above? yuto is correct because he isolated the variable correctly and reversed the inequality symbol. yuto is incorrect because he should not have reversed the inequality symbol. hila is correct because she isolated the variable correctly and reversed the inequality symbol. hila is incorrect because she should not have reversed the inequality symbol.

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅