I feel like it would be 10 because they are both near 10 in running speed
Answer:
He is right
Step-by-step explanation:

Hope this helps!
Answer:
Assuming you meant a shirt is $75............total cost of the shirt
$60
Step-by-step explanation:
$75 × 20% = $15
$75 - $15 = $60
The linear slope of x1x2 y1y2 came out as 9
77x + 21
We need to find the common factor between the coefficient and the constant.
77 ÷ 7 = 11
21 ÷ 7 = 3
7(11x + 3) is the factor of 77x + 21.
7(11x + 3) can be expanded using the distributive property of multiplication.
7(11x) + 7(3) = 77x + 21