Solve for c.
4(3+c)+c=c+4

c=-2

Step-by-step explanation:

4(3+c)+c=c+4

distribute the 4

12+4c+c=c+4

subtract c on both sides

12+4c=4

subtract 12 on both sides

4c=-8

c=-2

Step-by-step explanation:

subtract c and distribute

12 + 4 c = 4

4c = - 8

solve for c

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.

70

step-by-step explanation: