Multiply the following. Show your work to illustrate your understanding of the standard: a) 3x (7x+8)

b) (x-7) (x+4)

c) (x - 6)²

Triangle jkl was dilated using the rule dm, 1/3 the image, triangle j’ k’ l’ is the result of the dilation. a.5 units b.7.5 units c.10 units d.12.5 units

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles