If f(x) varies directly with x and f(x)=-70 when x=-10 what is f(x) when x=5

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation

3x + 4y = 5 x- 3y = -7 solve by substitution