Arectangle that has an area of 357 square inches is 17 inches wide. using the formula for area (a=lw), how long is the rectangle? a. 21 inches b. 340 inches c. 20 inches d. 15 inches

 a. 21 inches 
The rectangle that has an area of 357 square inches(a=357) is 17 inches wide(w=17). You are asked how long the length of the rectangle is. Then, you just need to put the number into the equation provided.

a=lw
area= length * width
357=length * 17
length= 357/17=21 inches

3.5 m/sec

Step-by-step explanation:

Find the "rate of change" or "speed" by dividing 4.0 sec into 14 m:

                 14 m

speed = = 3.5 m/sec

                4.0 sec