I’m going to say pre-algebra because that’s when I learned it in my school system but you may also learn it in algebra as well, College ready math can start in 8th grade math but I would think it would be in highschool.
46 is your correct answer bc 30 plus 16 is 46
-8x+8 because you simplify the like terms. So all the x’s and all the whole numbers
A percentage is an amount out of 100. So .45% is 0.45/100. For me, it's easiest to just multiply the numerator and denominator by 100 to get rid of the decimal, giving me 45/10,000
hope this helped
