Which expression is equivalent to 0.4x + 6x + 12?

a) 10x + 12

b) 6.4x + 12

c) 6.4(x + 12)

d) 18.4x

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?