Answer:

Step-by-step explanation:
40ab is 40 multiplied by a multiplied by b
Answer:
345 sq. ft
Step-by-step explanation:
You know that the area is the length times the width. Simply plug in values to your equation:
A = l * w
A = 23 * 15
A = 345
The area is 345 square feet.
Answer:
The answer is 2
Step-by-step explanation:
4z+2y-x
4(4)+2(-6)-2
16+(-12)-2
16-12-2
4-2
2