Answer:
(- 8, 8 ) and (- 4, 1 )
Step-by-step explanation:
The solution to a system of equations given graphically is at the points of intersection of the two
They intersect at (- 8, 8 ) and (- 4, 1 ) ← solutions
Let the sister be x years old.
Then Jessica is x + 5 years old.
Their ages add to 47.
x + x + 5 = 47
2x + 5 = 47
2x = 42
x = 21
x + 5 = 26
Jessica is 26, and her sister is 21.
Answer:
$37
Step-by-step explanation:
Travis has $8 left in his pocket. Do the opposite of what he did. If he "spent money", add it to the amount he has left. If he "found" money, then subtract.
First, he spent $26 on groceries for dinner. Add 26 with 8:
8 + 26 = 34
He found $1 on the ground. Subtract 1:
34 - 1 = 33
He spent $4 on lunch. Add 4:
33 + 4 = 37
Travis had $37 at the beginning of the day.
~
Answer:
2m + 20
Step-by-step explanation:
Given that:
Cost per meal = m
Tip left = $10
Total cost for each person :
m + 10
Total amount spent by the two :
2(m + 10)
2m + 20