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 like terms are 17c and 10c, 3d and d

17c + 10c=27c

Step-by-step explanation:−3d−17c+10c−d

=−3d+−17c+10c+−d

Combine Like Terms:

=−3d+−17c+10c+−d

=(−17c+10c)+(−3d+−d)

=−7c+−4d

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

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.