In order to find the product 38. 42, a student uses the expression (40 - 2)(40+2). Which expression is equivalent to 10 – 2)(40+2) I need the exact answer.

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1