Select all polynomial expressions that are equivalent to 5x^2+7x-4x^2+5 A:
13 x 5
B:
5x3-4x 2 + 7 x + 5
C:
5x3+4x \boldcdot 2 +7 x + 5
D:
5+4x-7x2+5x3
E:
5+7 x-4x2 + 5x3

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?