Acosine function has a period of 3, a maximum value of 20, and a minimum value of 0. the function is a reflection of its parent function over the x-axis.

which function could be the function described?

f(x)=−10cos(2π3x)+10

f(x)=−10cos(3x)+10

f(x)=10cos(2π3x)+10

f(x)=10cos(3x)−10

a negative exponent is translated as follows:

so, we have

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.