Answer:
Step-by-step explanation:
f ( x ) = 17 ( 3 + x )
f ( -2 ) = 17 ( 3 + -2 )
f ( -2 ) = 51 + -34
f ( -2 ) = 17
= 17
Sum of angles=(sides-2)*180
2520=(s-2)*180
s-2=14
s=16
Answer:
I don't know I wanna say the 3rd one
Step-by-step explanation:
Answer:
14.
Step-by-step explanation:
3x + 7y = 12
x - y = 1 Multiply this by -3:
-3x + 3y = -3 Add this to equation 1:
0 + 10y = 9
so y = 9/10 = 0.9.
x - 0.9 = 1
x = 1.9.
So 5x + 5y = 5*1.9 + 5*0.9
= 14.
Answer:
14
Step-by-step explanation:
you can write an equation to represent the situation:
let x represent the number of lawns he has to mow
then, the monthly profit would be 25x - 100.
in order to make $250, this equation has to be equal to 250:

now, solve this:
add 100 to both sides

divide both sides by 25

he must mow 14 lawns