Nate and maya are building model cars. maya's car is 3 inches less than 2 times the length of nate's car. the sum of the lengths of both cars is 26 inches. write an equation to determine the lengths of nate's and maya's cars.
a.) x + 3 − 2x = 26
b.) x + 2x = 26
c.) 2x − 3 = 26
d.) x + 2x − 3 = 26

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36