Evaluate the expression when b=4 and x=-4

-b+4x

To solve this problem, you must simply plug the values given into the expression. The expression becomes  -4 + 4(-4). Following the order of operations (PEMDAS), first solve  4(-4)  , which equals -16 (negative x positive = negative). Then, add -16 and -4, which equals -20. Therefore, the correct answer is -20.

step-by-step explanation:

*calories burned = (weight)(calorie factor)*

calories burned = 180 (0.65)

calories burned = 117

the calories he used up is 117, which is 65% of his weight.