Answer:
$13.60 for tip
$81.59 for total meal cost
Step-by-step explanation:
Meal = $67.99
tip is 20% so 0.20
67.99*0.20=13.60 tip
Answer:
d = -8
Step-by-step explanation:
Isolate the variable, d. Note the equal sign, what you do to one side, you do to the other. Divide -4 from both sides of the equation:

d = -8 is your answer.
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Answer:
Graph
Step-by-step explanation
Make a point in between -1 and 0. This will be your X value. Then on the y axis make a point on -1. Connect the 2 points with a line