Answer:
y= -3x-16
Step-by-step explanation:
slope intercept form is written as y=mx+b. m is the slope, and b is the y-intercept. -3=m
we know that (-5,-1) is 5 points away from the origin, and that the slope is -3, so 5 times -3 equals -15. subtract 15 from -1 (y-coordinate) in order to get the y-intercept (when x=0).
Answer: $312.5
Step-by-step explanation:
Lily spent one-fifth of her salary on a pair of shoes and then got $90 as a birthday present from her mom and was left with $340. To calculate the amount Lily had at first goes thus:
Since Lily spent 1/5 on shoes, that means she had (1 - 1/5) = 4/5 left.
Let the amount she had at first be y.
(4/5 of y) + 90 = 340
(4/5 × y) + 90 = 340
0.8y + 90 = 340
0.8y = 340 - 90
0.8y = 250
Divide both side by 0.8
0.8y/0.8 = 250/0.8
y= 312.5
She had $312.5 at first.
Step-by-step explanation:
Model:
s = slices
x = pizzas ordered
s = .8(.45x) + .12(.55x)
Now plugin 20 for x and you will get the total number of slices.
s = .8(.45x) + .12(.55x)
s = .8(.45(20)) + .12(.55(20))
s = 204 slices
Note, we could make this model different and smaller but I chose this method because it demonstrates what is going on with the word problem
Answer:
so 25% of 63
63x25:100
15,75=
63+15.75=
78.75=
79 appx
Step-by-step explanation:
