1. Solve for x: 4x/9 = 2(x+4)/3
2. Factor completely : x to the fourth power -16...
3. If a = all #s between -5 and 5, B= all primes and c= whole numbers how many numbers does the intersection of A,B, and C all contain? i think its 2...
hints
1. first, get rid of the fractions by multiplying both sides by 9
2. to factor, find the square root of x^4
3. you should draw a number line from -5 to 5 and graph points for A, B and C