Answer:
84
Step-by-step explanation:
It's divisible by 3 and 4. 8 is double 4. I did 3*4 which is 12. Then I multiplied it until I found the right answer 12*5=60, 12*6=72, and 12*7= 84.
3x^2+7x+4
Use the FOIL method, 3x•x +3x•1+4•x+4•1
3x^2+7x+4
Answer:
(7, -4.5)
Step-by-step explanation:
25−x=−4y ---> x=25+4y
3x−2y=30
use x to substitute into the second equation
3 (25+4y)-2y = 30
75+12y-2y=30
75+10y=30
10y=-45
y=-4.5
3x-2(-4.5)=30
3x+9=30
3x=21
x=7
check:
25-7=-4*-4.5
18=18 (yes)
3*7-2*-4.5=30
21+9=30
30=30 (yes)
First we find the slope m as follows:

So the equation is of the form:
y = 5x + b
When x = 1, y = 5. Therefore b = 0.
So the equation is:
y = 5x