Given that f(x) = 22 - 10x + 21 and g(x) = x – 7, find (f +g)(x) and xg
express the result in standard form.
=
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Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25