Answer:
11 hours
Step-by-step explanation:
let he works at first store x hours and at car wash y hours. Then
x+y=25
multiply by 4
4x+4y=100 ...(1)
12x+15y=333
divide by 3
4x+5y=111 ... (2)
(2)-(1) gives
y=111-100=11
Answer:3.25 gallons
Step-by-step explanation:48 miles÷2 gallons =24 miles
Every 24 miles equals 1 gallon
So 78 ÷ 24= 3.25
3.25 gallons
So the points are
(x,f(x))
(-3,-1)
(0,2)
(3,5)
(6,8)
hmm, find slope
slope betweeen 2 points (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)
slope betwen (0,2) and (3,5) Is (5-2)/(3-0)=3/3=1
y=mx+b
m=slope
b=y intercept
given slope=1
y=1x+b
find b
input a point
(3,5)
x=3 and y=5
5=1(3)+b
5=3+b
2=b
y=1x+2 is the equaiton
3x + 2y = 3. subtract 3x from both sides, so you get 2y = -3x + 3 . then you divide by 2 to both sides , so you get y = -3/2x + 3/2 .
Answer:
68.7
Step-by-step explanation:
