John took all his money from his savings account. he spent $110 on a radio and four elevenths 4 /11 of what was left on presents for his friends. john then put two fifths
2/5 of his remaining money into a checking account and donated the $420 that was left to charity. how much money did john originally have in his savings account?

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Is the power produced directly proportional to the wind speed, give reasons for your answer?