Easy
y=2x-7
sub 2x-7 for every y you se inother equation
x+2(2x-7)=1
x+4x-14=1
5x-14=1
add 14 both sides
5x=15
divide 5
x=3
sub back
y=2x-7
y=2(3)-7
y=6-7
y=-1
(3,-1) is solution
Answer: x<7 (x = all answers)
Step-by-step explanation:
(3x-3) < 18 = 3x-3 < 18
3x-3 < 18
+3 +3
3x < 21
3x/3 < 21/3
x<7
All answers are correct because they are all negative, which means they are less than 7.
Answer:
13.99 min
Step-by-step explanation:
See it in the pic
If three consecutive values add to 567 the middle value must be 567/3 = 189
Since the values are multiples of 9, the other values must be 189 - 9 and 189 + 9
The three values are 180, 189, 198
Say b, initial price, + 20,000.
y, price after x years = m years + 20,000.
m would be negative because the price would decline after x years.