Given
2 cans cover 750 square feet
x cans cover 15000 square feet
Then, find x:
[tex]\begin{gathered} 750\times x=15000\times2 \\ 750x=30000 \\ \frac{750x}{750}=\frac{30000}{750} \\ x=40 \end{gathered}[/tex]
This is, 40 cans of paint can cover 15000 square feet.
On the other hand, we have:
1 can has a price of $25, so
[tex]40\times25=1000[/tex]
Therefore, 40 cans have a price of $1000
And finally, the sales tax rate is 7%, this is:
[tex]1000\times\frac{7}{100}=1000\times0.07=70[/tex]
Hence, the total cost is
[tex]1000+70=1070[/tex]
Answer: E. $1070
