Solving systems by substitution:

y=5x-10

y=3x+8

I dont underatand how to solve it

Factor completely x^2+12x-24

4.5+1.5k=18-3k solve for k

F (x) = x2 - 12x + 50

It takes an older pump 3 times as long to drain a certain pool as it does a newer pump. Working together, it takes the two pumps 9 hours to drain the pool. How long will it take the older pump to drain the pool working alone?

If the number in numeratorof a unit rate is 1, what does this indicate about the equivalent unit rates

How many solutions does a inequality have

How do I add 14 ten thousands plus 12 thousand written in standard form

Eric deposits X into a savings account at time 0, which pays interest at a nominal rate of i, compounded semiannually. Mike deposits 2X into a different savings account at time 0, which pays simple interest at an annual rate of i.

Find the probability of drawing a 4 card on the first draw, replacing it and drawing a 10 card on the second draw. (no joker included)

What is the ratio of two soccer balls to six footballs