Answer:
Step-by-step explanation:
(g-f)(x) = 9x³ - 4x² + 10x - 55 - [ 4x³ +3x² - 5x + 20]
To remove the parenthesis, take - inside, multiply f(x) by -1
= 9x³ - 4x² + 10x - 55 - 4x³ - 3x² + 5x - 20
Now, bring like terms together,
= 9x³ - 4x³ - 4x² - 3x² + 10x + 5x - 55 - 20
= 5x³ - 7x² + 15x - 75
Step-by-step explanation:
$31.50 is how much she made
418.5 is how much the store made, but, that is the simple value, there could be more variables
Answer:
25%
Step-by-step explanation:
Well, the rule of rounding is: if the number is higher than 5, or 5, you round up, and if it is lower than 5, you round down. 5 gets rounded up, so that makes 7 and eight, and eight is higher than 5 so it also gets rounded up, so that would be 6,322. If the decimals were lower, than you would have gotten 6,320, but we rounded up, so 6,322 is the correct answer. Did this help?
