A hospital laboratory needs a 15% hydrogen chloride solution. However, only 10% and 18% HCI solutions are in stock. How much of the 18% solution should be mixed with 100 fl oz of the 10% solution to get a 15% solution

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

answer is because 4×10=40

and 98×4= is 392

40,392

27/4x^6 y^8

step-by-step explanation:

4(3x^2y^4)^3 (2x^3y^5)^4

=

108x^6 y^12 /16x^12 y^20

=

108 /16x^6 y^8

=

27 /4x^6 y^8