Last year, Lukas read 7 more books than Trevor. This year, Lukas read twice as many books as last year. If k represents the number of books Trevor read last year, type an expression to show the number of books Lukas read this year. Enter your answer in the box.

he read 11

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'.

step-by-step explanation:

mean or average is 40.6