Final answer:
To expand a quadratic horizontally by a factor of 2 and translate it 7 units up, you can multiply the x-values by 1/2 and add 7 to the y-values, respectively.
Step-by-step explanation:
To expand a quadratic horizontally by a factor of 2, you multiply the x-values by 1/2. For example, the equation y = x^2 would become y = (1/2x)^2.
To translate the quadratic 7 units up, you add 7 to the y-values.
So the final equation would be y = (1/2x)^2 + 7.