If x, y, z and L are proportional
quantities, prove that: 3x+ 5z/ 7x+z = 3y+5L/7x+ L

Which graph represents the following piecewise defined function?

Adaycare center charges a $75 enrollment fee plus $100 per week. which of the following represents the cost of sending a child to daycare for 14 weeks?

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30