Hey! Sorry for the 6 day late response. The answer is:
25%
Answer:
450 - 30x
Step-by-step explanation:
Lourdes reads 30 pages in one day
Total pages in book = 450
The number of days is x.
Lourdes reads in x days = number of pages read in one day x number of days
= 30 x
Number of pages left after x days = 450 - 30x
Thus, the number of pages left after x days is 450 - 30 x .
Answer:
Step-by-step explanation:
y = ax² + bx + c
a( - 7)² + b( - 7) + c = 134 ⇔ 49a - 7b + c = 134 ......... (1)
a( - 3)² + b( - 3) + c = 10 ⇔ 9a - 3b + c = 10 ......... (2)
a(5)² + b(5) + c = 50 ⇔ 25a + 5b + c = 50 ......... (3)
(1) - (2)
40a - 4b = 124 ⇔ 10a - b = 31 ........... (4)
(3) - (2)
16a + 8b = 40 ⇔ 2a + b = 5 ........... (5)
(4) + (5)
12a = 36 ⇒ a = 3
2(3) + b = 5 ⇒ b = - 1
9(3) - 3( - 1) + c = 10 ⇒ c = - 20
y = 3x² - x - 20
y = [ 3 ] x² + [ - 1 ] x + [ - 20 ]
Slope intercept form: y=3/4 - 3
slope:3/4
Y-intercept: -3
Because you subtract 4y from both sides to get it on the other side of the equation. You don’t want it to be 4y=3x-12 though so you would divide both sides by 4 which would give you y=3/4x-3. I hope this is right and it helps