How would i turn y=1/2x-5 into standard form

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Find percent notation for 0.008 0.008=

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth