Answer: Nick must now at least 6 yards.
Step-by-step explanation:
Since Nick has $80 saved already, and he makes $40 per yard that he mows, thus can be put up in an equation as:
= 80 + 40y
where y = number of yards
Since Nick needs to raise at least $320 for his trip, the equation to solve this will be:
80 + 40x ≥ 320
40x ≥ 320 - 80
40x ≥ 240
x ≥ 240/40
x ≥ 6
Therefore, Nick must now at least 6 yards.
Answer:
x = 3
y = -1
Step-by-step explanation:
Finding X
Substitute y into the 1st equation
3x + 2(x-8) = 7
Simplify
3x + 2x-8 = 7
Combine like terms
5x - 8 = 7
Move the constant (-8) to the right
5x = 7+ 8
Simplify
5x = 15
Divide both sides by 5
x = 3
Finding Y
Now since you know x is 3 substitute that into the 2nd equation
y = 3 - 4
y = -1