Mathematics: 1. choose the correct simplification of the expression −5x2(4x − 6x2 − 3). 30x4 − 20x3 + 15x2 −11x4 − x3 − 8x2 −30x4 + 20x3 − 15x2 30x4 + 20x3 + 15x2 2. simplify (6x2 − 3 + 5x3) − (4x3 − 2x2 − 16). 2x3 − x2 + 21 −2x3 + x2 − 21 x3 + 8x2 + 13 −x3 − 8x2 + 13

$175 Step-by-step explanation:Let x represent money saved by her in one month.So money saved by her in one year (12 months) would be .We can represent our given information as:Therefore, she needs to save $175 per month....

1. choose the correct simplification of the expression

Ответ:

STAYxALIVE7814

02.06.2020

Mathematics

1) 30x4 − 20x3 + 15x2

This is the answer to 1. Don't forget to rearrange the terms in ascending order. That can trip people up.

2) x3 + 8x2 + 13

Don't forget to check the terms sign. The subtraction symbol switches them all.