Joyce is training for a 10K race. For each of her training nuns, she
recorded the distance she ran and the time she ran. She made a
scatter plot of her data and drew a trend line Use the trend line
to predict how long it would take Joyce to run 45 miles.

a

step-by-step explanation:

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.