Scott bought 8 packs of pencils for y dollars per pack. Which expression shows how much Scott pays for the pencils? A.
8+y
B.
8÷y
C.
y−8
D.
8y

An equation where variables are used to represent known values—function notation true or false

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Select all of the following expressions that are equal to 2.5.