Answer:
28.27
you just have to know the formula
Answer:
t(15)+10=c
Step-by-step explanation:
t (t-shirts) times 15 (the cost of each shirt) plus 10 (the shipping cost)=total cost
ANSWER
The solution is
<u>EXPLANATION</u>
We were given the equations
and
This is a simultaneous equation in and .
But the coefficient of in the second equation is zero. that is why it seems to be absent.
We solve these two equations simultaneously
by putting in to equation (1).
Tis gives;
We add 10 to both sides to get;
we divide through by 4 to get
Hence the solution for the system is
Since Sam can paint 5 rooms in 10 hours, since:
then Sam would have to paint at least 3 rooms to make $150.
The range of hours would be from 6 to 10 hours, since 3 rooms takes 6 hours to paint.