1) <span>Evaluate 2A - 3B for A = 7 and B = -2. To solve this start by filling in the variables. 2(7) - 3(-2)
Now multiply, remember that a positive times a negative is a negative. 14 - (-6)
Finally, subtract. Remember, Keep, Change, Change (KCC). Keep the first number, change symbol (for subtraction use addition), and change the negative number to a positive number. 14 + 6 = 20
</span><span>2) If x = -3, then x 2-7x + 10 equals Start by filling in the variables. -3(2) - 7(-3) + 10
Now follow PEMDAS (Parentheses, Exponents, Multiplication & Division, Addition & Subtraction) to solve. Remember K.C.C (no. 1 above) </span>-3(2) - 7(-3) + 10 <span>(-6) - (-21) + 10 (-6) + (21) + 10 15 + 10 25*****See NOTE!*** </span><span>_____________________________________________________________ Note: For #2 you may be missing a symbol between the first "x" and "2" because the answer I got above (25) is not one of your choices. Let me know what symbol is missing in the equation: </span><span>x 2-7x + 10, and I will help you solve it.</span>
