NEED ANSWER PLEASE WILL GIVE BRAINLIEST

Let fx) = 8x-7.
What is f4)?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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