HELPMEEEEEEEEEEEEE

The sum of the complex numbers equals -6+2i. To graph it I'm not sure.

Hope this helps!

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It's a worksheet? 

The largest multiple of 7 less than 74 is 70, so if it has a remainder of 3, you add 3 to 70 to get 73.

Again with the modular arithmetic...this will help solve problems with much larger numbers.

Hope this helps!

The first equation has roots of 1/9 and -3/2. The second equation has roots of -1/2 and -3/2. The root that satisfies both equations is -3/2.

Hope this helps!

The smallest number that satisfies both conditions is 28, so when divided among 7 people, there are 0 coins left.

To find the smallest number you'll need to know something called modular arithmetic which is something I cannot explain so you may have to look that up yourself.

Hope this helps!

Yep 

This problem seems tricky at first, if you plug in any positive integer, you will always get an even number. There is only one even prime which is 2. When n=16,19, p=2 which are the only values that work. So 16*19= 304 which is your answer.

Hope it helps!

For f(g(x)) you'll get 3ax+3b+2 and for g(f(x)) you'll get 3ax+2a+b. The equation 3ax+3b+2=3ax+2a+b can be simplified to b+1=a. We also know that ab=20 so the only value where ab=20 and b+1=a is where b=4 and a=5. So your answer is 5.

If you didn't know, the "U" means Union and the upside-down "U" means intersect.