Describe a real-world example in which hidden variables may be an issue, taking care to identify each variable and its relationship to the others.

1,645,493,059.35

step-by-step explanation:

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.

2 1/2 feet

step-by-step explanation:

i believe a. 12x≥120 is the answer