2025 Algebra 1 EOC | Problem #17

Added: 2026-05-23

[00:00:00]This is number 17 from the 2025 Algebra 1 EOC. It says a function is shown f of x equals 3 * x - 4 squared - 7. What is the value of f of -1? So, with problems like this, all we have to do is take this number and plug it in where we see x. So, that means we're going to do 3 * -1 - 4 squared - 7. And now we just do the math. So, -1 - 4 is going to be -5.

[00:00:28]So, this becomes 3 * -5 squared - 7. -5 squared is positive 25. So, we have 3 * 25 - 7. 3 * 25 is 75 - 7. And then 75 - 7 is going to be 68.

[00:00:48]And so, 68 is going to go in our blank.

[00:00:50]And that is going to be our final answer. If you're taking the Algebra 1 EOC or you just need extra help in Algebra 1, go ahead and check out my platform I designed for students and parents just like you. It has every single video lesson you will ever need for Algebra 1. So, if you want to check it out, just go to alldayeverydaymath.com or comment all day and I'll send you the link.