Question

1- Evaluate 3x - 5 for x = -2.

What is the value of 3x - 5 when x = -2?
a) 1
b) -1
c) -6
d) -11

2- Evaluate -5/8 x + 10 for x = -8.
What is the value of -5/8 x + 10 when x = -8?
a) 2
b) -4
c) 10
d) -10

Answer 1

To evaluate 3x - 5 for x = -2, substitute the value of x into the expression and perform the calculation. The value of 3x - 5 when x = -2 is -11. To evaluate -5/8 x + 10 for x = -8, substitute the value of x into the expression and perform the calculation. The value of -5/8 x + 10 when x = -8 is not provided in the given options.

Step-by-step explanation:

To evaluate the expression 3x - 5 for x = -2, substitute the value of x into the expression: 3(-2) - 5. Multiply 3 by -2 to get -6, and then subtract 5. The value of 3x - 5 when x = -2 is -6 - 5 = -11. Therefore, the correct answer is d) -11.

To evaluate the expression -5/8 x + 10 for x = -8, substitute the value of x into the expression: -5/8(-8) + 10. Multiply -5/8 by -8 to get 5, and then add 10. The value of -5/8 x + 10 when x = -8 is 5 + 10 = 15. Therefore, the correct answer is not provided in the given options.