10. Scores of high school seniors on the SAT follow the Normal distribution with mean u = 1026 and o = 209. The proportion of seniors who score more than 850 is/determined by

35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

brainliest is always apprectiated