Evaluate the expression x=-7. x2+4x-5

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work