Twice the difference of a number and 2 is equal to three times the sum of the number and 6.

x= -22

Step-by-step explanation:

Write out the equation in numbers: 2(x-2)=3(x+6)--->2x-4=3x+18 > -x=22       >x= -22

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.