Answer:
Step-by-step explanation:
Combine like terms.Like terms have same variable with same exponent
4x³ + 6x - 7 + 3x³ - 5x² - 5x + 9 = <u>4x³ + 3x³</u> - 5x² + <u>6x - 5x</u> <u>- 7 + 9</u>
= 7x³ -5x² + x + 2
It 13
-4
y-3=-4(x-5)
y=-4x+20+3
y=-4x+23
y=mx+b where m=slope and b=y-intercept
$1.85
2.15
-1.30
--------
1.85