21 x 155 = 3255
She read 3255 pages altogether.
Answer:
its option three
Step-by-step explanation:
Answer:
Yes, the table is proportional.
Step-by-step explanation:
To find out if a table is proportional or not see if they have the same constant of proportionality.
The formula for finding the constant of proportionality is <em>k </em>= <em>y/x.</em>
1/4 ÷ 1 = 1/4
1/2 ÷ 2 = 1/4
3/4 ÷ 3 = 1/4
1 ÷ 4 = 1/4
They all have the same constant of proportionality which means they are proportional.
Answer:
1445
Step-by-step explanation:
Answer:
$450
Step-by-step explanation:
C = k
200 = k() = 4k
k = 50
C = 50 = 50() = 50(9) = $450