Mrs. Ramirez's income increased 140% last year. To model this percent, use _ A. grid #1 only

B. grid #2 only

C. grids #1 and #2 only

D. grids #1 and #3 only​

grid #1 and grid #3

Step-by-step explanation:

grid 3 is 100% out of 100% making one whole and grid 1 has 40 out of 100 squares filled. 100 + 40 = 140/140%

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0