Select the statement that correctly describes the expression below.
(5x – 3)
A.
the square of the difference of 5 times x and 3
B. the square of 5 times the difference of x and 3
C.
the difference of 5 times x and the square of 3
D. the difference of the square of 5 times x and 3

The functions q and r are defined as follows. q(x)= -2x+2 r(x)= x^2 - 1 find the value of r(q(

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor