In an anatomy class, test scores were determined to be 20 times the number of hours, h, the student studied plus 4. Which of the following functions best describes a student’s test score depending on the number of hours, h, that the student studied?

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -