19 - 2(x - 7)
First, expand to remove the parentheses. / Your problem should look like: 19 - 2x 14
Second, simplify. / Your problem should look like: -2x + 33
Answer: -2x + 33
We can solve this system using elimination:
(x+y=24)3
3x+5y=100
3x+3y=72
-(3x+5y=100)
0x-2y=-28
y=14
We can then plug this back into one of the original equations:
x+14=24
x=10
We can check our answer by plugging this into both of the original equations:
10+14=24
24=24
3(10) + 5(14)=100
30+70=100
100=100
Therefore, there are 10 3-point questions and 14 5-point questions.
Answer:
Step-by-step explanation:
f(x) = 1(x-6)(x-5) = x²-11x+30