Question

Evaluate each expression when r=9 and y=−2 using the principle . 2r−3y

a. 33
b. 39
c. 45
d. 51

Answer 1

To evaluate the expression 2r-3y when r=9 and y=-2, substitute the values into the expression and perform the arithmetic operations to obtain a final answer of 24. None of the above option is correct.

Step-by-step explanation:

The question asks us to evaluate the expression 2r-3y when r=9 and y=-2. To find the solution, we simply substitute the given values into the expression and perform the arithmetic operations.

Step 1: Substitute the values into the expression: 2(9) - 3(-2).

Step 2: Multiply 2 by 9 to get 18.

Step 3: Multiply 3 by -2 to get -6 (note the negative sign).

Step 4: Since we are subtracting a negative number, it becomes addition: 18 + 6.

Step 5: Add 18 and 6 to obtain the final answer: 24.

Therefore, the expression 2r-3y evaluates to 24 when r=9 and y=-2.

None of the above option is correct.