The number of calories burned by a 150-lb person by walking 2mph can be represented by the expression 240h , where h represents the number of hours spent walking, calculate the number of calories burned by walking : (A) the number of calories burned by walking 4 hours is ..

Question and answers are in the attached picture. you so much in advance.

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?